The relationhip is shown by the Newton's second law of motion
What is Newton second law?Newton's second law of motion is a fundamental principle in physics that describes the relationship between the motion of an object and the forces acting on it. The law states that the acceleration of an object is directly proportional to the net force acting on it, and inversely proportional to its mass. Mathematically, the law can be expressed as:
F = ma
where F is the net force applied to an object, m is the mass of the object, and a is the resulting acceleration of the object. In other words, the greater the force applied to an object, the greater its acceleration will be, and the greater its mass, the smaller its acceleration will be for a given force.
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frequency formula velocity
Frequency can be found from velocity by dividing the velocity by the wavelength of the wave.
To find the frequency from velocity, you need to know the velocity of the wave and the wavelength of the wave. The frequency is simply the speed of the wave divided by its wavelength.
The formula for frequency (f) is,
f = v / λ
Where v is the velocity of the wave and λ is the wavelength of the wave. Velocity is usually measured in meters per second (m/s) and wavelength is measured in meters (m). The resulting frequency is measured in hertz (Hz), which represents the number of complete wave cycles that occur in one second.
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--The complete question is, How do you find frequency from velocity?--
under which circumstance is there a force exerted on your hand by the apple?
There is a force exerted on your hand by the apple when the apple is in contact with your hand and you are holding it up against the force of gravity.
When you hold an apple in your hand, the apple is pressing against your hand with a force equal and opposite to the force your hand is applying on the apple. This force is due to the interaction between the atoms and molecules of your hand and the apple, which is known as the normal force.
As long as the apple remains in contact with your hand, there is a normal force acting on the apple and your hand, which prevents the apple from falling due to the force of gravity. Therefore, the force exerted on your hand by the apple is present when the apple is in contact with your hand and you are holding it up against the force of gravity.
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17
Quotations
Dark They Were
Can you discuss the following quotations from the story?
1. "The wind blew, whining. At any moment the Martian air might draw his
soul from him, as marrow comes from a white bone."
2. "A radio flash just came. Atom bombs hit New York! All the space
rockets blown up. No more rockets to Mars, ever!"
The quotation highlights the colonists' fear and uncertainty about their new environment. The phrase "the Martian air might draw his soul from him" suggests that the atmosphere of Mars is so inhospitable that it could kill the colonists.
The second quotation highlights the colonists' isolation and the fragility of their situation on Mars.
What do the quotes mean?"The wind blew, whining. At any moment the Martian air might draw his soul from him, as marrow comes from a white bone." The story takes place on Mars, where a group of human colonists have settled after leaving a war-torn Earth. The comparison to "marrow coming from a white bone" is a vivid metaphor that conveys the idea of something being drawn out of a person with great force.
"A radio flash just came. Atom bombs hit New York! All the space rockets blown up. No more rockets to Mars, ever!" The colonists on Mars receive this radio message, which tells them that a catastrophic event has occurred on Earth. The news that atom bombs have hit New York and that all the space rockets have been destroyed is a devastating blow to the colonists, who had been hoping to receive supplies and reinforcements from Earth. It also suggests that their dreams of building a new civilization on the red planet may be dashed by events beyond their control.
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What is 35.6 degrees Celsius in Fahrenheit?
In Fahrenheit, 35.6 degrees Celsius is equivalent to 128.08 degrees.
Use the formula below for the convert 35.6 degrees Celsius to Fahrenheit:
°F = (°C x 1.8) + 32
The process of translating a temperature from one scale to another is referred to as temperature conversion. Temperature conversions between the several regularly used temperature scales, including Celsius, Fahrenheit, and Kelvin, are frequently required.
where the temperature is expressed in degrees Fahrenheit (°F) and degrees Celsius (°C).
Plugging in 35.6 degrees Celsius yields the following results:
°F = (35.6 x 1.8) + 32 °F
=> 96.08 + 32 °F
=> 128.08
As a result, 35.6 Celsius is equivalent to 128.08 Fahrenheit.
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if you weigh 100kg on earth, approximately how much would you weigh on the moon: a) 100kg b) 16kg c) 160 kg d) 60kg
An object that weighs 100 kg on Earth would have weight of about b) 16 kg on moon.
The weight of an object on the moon is different from its weight on Earth due to the difference in the gravitational force between the two objects. The gravitational force on the moon is much weaker than on Earth because the moon has less mass and a smaller radius.
Gravitational force on moon is 1/6th of gravitational force on Earth. Therefore, an object that weighs 100 kg on Earth would weigh about 16.6 kg (100 kg divided by 6) on the moon.
Therefore, the answer is (b) 16kg. It is important to note that the mass of the object remains the same on both Earth and the moon, as mass is a fundamental property of an object that does not change with location. However, weight is a force that is dependent on the gravitational force acting on the object, so it varies with location.
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what do you call a wave that is made up of electric and magnetic fields?
A wave that is made up of electric and magnetic field is called an electromagnetic wave. They are produced by oscillations if both the fields.
An electromagnetic wave is produced when an electrical field come in contact with a magnetic field. An electric wave is produced by a charged particle. When a charged particle moves, magnetic waves are formed. So when a charged particle moves an electromagnetic field is formed. An electromagnetic wave is simply electrical and magnetic field moving with the speed of light.
The oscillation of electric field and magnetic field is perpendicular to the direction of the wave. Electromagnetic spectrum is the spectrum of waves arranged in order of increasing wavelength.
Examples are Gamma rays, X-rays, UV, Visible light, Infra red and radio waves.
So the wave that is made up of both electrical and magnetic fields are Electromagnetic waves.
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knowing that the tension is 510 lb in cable ab and 425 lb in cable ac, determine the magnitude and direction of the resultant of the forces exerted at a by the two cables.
Subtract this magnitude of a smaller force from of the magnitude of bigger force to determine the resultant force. The smaller force and the resultant force both have the same direction.
What is the resultant from two forces formula?The combined impact of two forces, F and F, acting on a body in a single place is equal to the action of one force, known as the resultant force. The following figure shows two different ways to display the vector equivalence R = F + F.
What happens when two parallel forces combine?The sum of the individual forces acting on a body as a result of two forces acting in similar directions is called the resultant, and the point of application of the resultant divides the line connecting the pts of application of the individual forces internally inside the inverse ratio of a forces.
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How to convert 97.9 f to c
97.9°F is equivalent to 36.6°C.
A temperature unit developed from the SI (International System of Units) is Celsius (symbol: °C).
Prior to the adoption of the metric system, Fahrenheit (symbol: °F) was a commonly used measurement of temperature.
To convert Fahrenheit (°F) to Celsius (°C) we have to first subtract 32 from Fahrenheit and then multiply it by .5556 or 5/9.
We have to convert 97.9 degrees Fahrenheit (°F) to Celsius (°C),
We can use the following formula:
°C = (°F - 32) x 5/9
As per the given information,
°F = 97.9
Substituting the value 99.3 for °F,
We get:
°C = (97.9 - 32) x 5/9
°C = 36.6
Therefore, 97.9°F is equivalent to 36.6°C.
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To convert 97.9 degrees Fahrenheit to Celsius, use the formula C = (F - 32) * 5/9. After plugging in the F value, it's found that 97.9 degrees Fahrenheit is approximately 36.6 degrees Celsius.
Explanation:This involves Mathematics in the form of formula application. The question is asking how to convert 97.9 Fahrenheit (F) to Celsius (C). The formula to do this is: C = (F - 32) * 5/9. Plugging in the Fahrenheit value, we get:
C = (97.9 - 32) * 5/9
. This simplifies to:
C = 65.9 * 5/9
. Finishing the calculation, we get:
C ≈ 36.6
. Thus, 97.9 degrees Fahrenheit is approximately 36.6 degrees Celsius.
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The current in a 120 V reading lamp is 2.4 A .
If the cost of electrical energy is $0.075 per kilowatt-hour, how much does it cost to operate the light for an hour?
It would cost approximately 2 cents to operate the 120 V reading lamp with a current of 2.4 A for an hour.
To calculate the cost of operating the light for an hour, we first need to determine the power consumption of the light bulb in kilowatts.
Power = Voltage * Current
P = 120 V x 2.4 A
P = 288 watts or 0.288 kilowatts
Now, we can calculate the cost of operating the light for an hour.
Energy consumed = Power x time
Energy consumed = 0.288 kW x 1 hour
Energy consumed = 0.288 kWh
Cost of operating the light for an hour = Energy consumed x Cost per kilowatt-hour
Cost of operating the light for an hour = 0.288 kWh x $0.075/kWh
Cost of operating the light for an hour = $0.0216 or approximately 2 cents
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The largest deflection from the isoelectric line in the ECG is found in the Multiple Choice A) P wave. B) T wave. C) T-P segmept. D) QRS complex. E) P-R interval.
The largest deflection from the isoelectric line in the ECG is found in the QRS complex.
The correct option is D.
What is an ECG?An ECG (electrocardiogram) is a medical test that records the electrical activity of the heart. It is a non-invasive procedure that involves attaching electrodes to the skin of the chest, arms, and legs, which detects the electrical signals generated by the heart as it beats. These signals are amplified and recorded, producing a visual representation of the heart's electrical activity over time, known as an ECG waveform.
The QRS complex is the largest deflection from the isoelectric line in the ECG. It represents the depolarization of the ventricles and is typically a sharp, narrow peak.
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what quantity determines how hard it is to change an object’s motion / velocity?
Mass is the quantity that determines how hard it is change an object's motion or velocity.
Velocity is a vector quantity, i.e., it has both magnitude and direction. Velocity is the rate at which an object moves and is expressed in terms of m/s. The change in velocity of an object over a specific period of time is called the acceleration of that object. To determine how hard it is to change the object's motion or velocity, you need to be familiar with a quantity called its mass.
According to Newton's second law of motion, the force applied on an object to move it can be illustrated by the formula:
F = m*a, where F is the force, m is the mass, and a is the acceleration of the object. Thus, we can say that mass determines how hard it is to change the motion or velocity of the object. If it is a lighter object, it can be accelerated easily with a less force applied, while a heavier object would require more efforts and hence more force would be applied to change its state.
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he single period tv/m lump sum formula can be used to solve for pv, fv, or r. which is the correct formula?
To find PV, FV, or r, apply the one period Although on lump sum formula. FV = Fv (1+r) FV-PV-PV/1+r PV-FV/1+r
Describe formula.
The meaning of a formula. (Page 1 of 2) 1a: a predetermined set of phrases used in rituals or ceremonies. b: a formalized assertion meant to convey a fundamental fact or principle, especially as a starting point for discussion or action. Recipe 2a(1) The manufacturer of the product won't divulge the formula's secret ingredients. prescription (number 2)
The % formula is what.
To determine the quantity or percentage of an item in terms of 100, use the percentage formula. Per cent simply means one in a hundred. With the percentage formula, a number between 0 and 1 can be expressed. A number that is expressed as a percentage of 100 is what it is. It is mostly used to evaluate and determine ratios and is represented by the symbol %.
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Two Staters are moving across the ice at rate of 2.3m/s when the 85kg man pushes the 66kg woman in such a way that he stops. What speed will she move after the push?
The woman will be moving at a speed of 5.2 m/s after the push.
What is speed?Speed is the rate at which an object or person moves from one place to another. It is measured in distance over time, such as meters per second, miles per hour, or kilometers per hour. Speed is a scalar quantity, meaning it has magnitude but no direction.
The man and woman are moving with the same speed before the push, so they must be moving with the same speed after the push. This is because momentum must be conserved. Momentum is equal to the mass times the velocity, so the momentum of the two-stater system before the push is equal to the momentum of the system after the push. We can calculate the momentum before the push by multiplying the total mass (85kg + 66kg = 151 kg) and the velocity (2.3 m/s), and find it to be 344.3 kg*m/s. We can then calculate the velocity of the woman after the push by dividing the momentum by the mass, and find it to be 344.3/66 = 5.2 m/s. Therefore, the woman will be moving at a speed of 5.2 m/s after the push.
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When you remove the lid from a food container that has been left in a freezer for several months, you discover a large collection of ice crystals on the underside of the lid. Explain what has happened.
When you remove the lid from a food container that has been left in a freezer for several months, the cold air inside the container causes the moisture inside the container to freeze onto the underside of the lid.
Food container that has been left in a freezer for several months we discover a large collection of ice crystals on the underside of the lid this is due to the formation of a layer of ice crystals as the water vapor in the container condenses and freezes onto the cold surface of the lid. This process is known as sublimation and is why you find a layer of ice crystals on the underside of the lid.
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what is physics formula sheet
A physics formula sheet is a document that lists the most important equations and formulas used in physics.
It is a useful reference for students and professionals who need to quickly access formulas for various physics problems. The specific content of a physics formula sheet may vary depending on the level and type of physics being studied.
Some common topics covered in a physics formula sheet include:
Mechanics: formulas for motion, forces, work, energy, and momentum
Waves and Optics: formulas for wave properties, optics, and sound
Thermodynamics: formulas for heat, temperature, and energy
Electricity and Magnetism: formulas for electric fields, magnetic fields, and circuits
Modern Physics: formulas for relativity, quantum mechanics, and nuclear physics
It's important to note that a physics formula sheet is not a substitute for understanding the concepts and principles behind the formulas. It's always a good practice to derive and double-check the formulas rather than just memorizing them.
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how to convert mpa to kpa
To convert MPa (megapascals) to kPa (kilopascals), you can multiply the value in MPa by 1000.
The pascal (symbol: Pa) is the SI unit of pressure, defined as one newton per square meter. It is named after Blaise Pascal, the French mathematician, physicist, and philosopher who contributed to the development of the modern theory of hydrodynamics.
One pascal is equivalent to one newton (N) of force per square meter (m²) of area:
1 Pa = 1 N/m²
Pressure can be defined as the force applied per unit area, and the pascal provides a convenient way to measure pressure in a wide range of applications. For example, the pressure of the atmosphere at sea level is approximately 101,325 Pa, or 101.3 kilopascals (kPa).
For example, if you want to convert 2 MPa to kPa:
2 MPa * 1000 = 2000 kPa
Therefore, 2 MPa is equal to 2000 kPa.
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How to convert 95f to c?
95°F is equivalent to 35°C temperature. Using Formula: °C = (°F - 32) x 5/9.
A measure of something's heat or coldness is its temperature. The most often used temperature scales globally are Celsius (°C) and Fahrenheit (°F), while there are other scales as well.
To convert Fahrenheit to Celsius, you need to subtract 32 from the Fahrenheit temperature and then multiply the result by 5/9. This formula works because the freezing point of water is 32°F and 0°C, and the boiling point of water is 212°F and 100°C. So, a change of 1 degree Fahrenheit is equivalent to a change of 5/9 degree Celsius.
To convert 95 degrees Fahrenheit (°F) to Celsius (°C), you can use the formula:
°C = (°F - 32) x 5/9
Substituting 95 for °F in the formula, we get:
°C = (95 - 32) x 5/9 = 35
Therefore, 95°F is equivalent to 35°C.
To remember this formula, you can use the mnemonic: "First subtract 32, then multiply by 5/9".
Alternatively, you can use online temperature converters or smartphone apps to quickly and accurately convert between different temperature scales.
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The manufacturer of a 12V car headlightspecifies it will draw a current of 6A. You would like to checkthis claim with an ammeter designed to measure currents up to 10Aand having a resistance of 0.1 Ohms.a)Which of the two figures represents acircuit where the ammeter correctly measures the current in theheadlight?b) How much current (in A) would flow in the ammeter forCircuit a?c) How much current (in A) flows through the ammeter for Circuitb?
A) Circuit A is an example of a circuit in which the ammeter accurately records the current flowing through the headlamp.
B) In Circuit A, the ammeter's current would be 6 A because it is wired in series with the headlight and has no impedance.
C) In Circuit B, 5.9 A of current would be passing through the ammeter.
Electrical equipment used to detect electrical current is called an ammeter. It measures the current immediately and is connected in series with the circuit. The ammeter is a particular kind of galvanometer, a tool used to identify and measure tiny electric currents. An electromagnet is used to measure the intensity of the magnetic field created by the ammeter around the conductor that is carrying the current.
Current flowing through the conductor immediately relates to the field's strength. Both straight and alternating currents can be measured using the ammeter. It is typically connected in series with the circuit and has a minimal resistance to make sure that all of the current passes through it. The ammeter is a crucial tool in the study of electricity because it can also detect extremely small currents.
Circuit A measures the current in the headlight.
For Circuit A, as the ammeter has no resistance and is connected in series with the headlight.
For Circuit B, the current flowing through the ammeter would be 6 A - 0.1 A = 5.9 A.
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As the temperature of an air mass increases, its volume also increases and its density ______.
Answer:
Explanation:
density = mass/volume
So if mass and volume increase, density also increases
a cliff on miranda is 5.00 km high. it appears on the limb at the 11 o'clock position in part a of the figure above and is magnified in part (b) of the figure above. a devotee of extreme sports runs horizontally off the top of the cliff at 7.90 m/s. for what time interval is he in flight?
The time of flight is approximately 101.04 seconds, or just over 1 minute and 41 seconds.
What is displacement and distance?Displacement and distance are both concepts used to describe the motion of an object, but they have different meanings.
Distance refers to the total length of the path traveled by an object from its starting point to its ending point. It is a scalar quantity, which signifies it only has magnitude and no direction. For example, if a person walks 2 km east and then 3 km north, the total distance traveled is 5 km.
Displacement, on the other hand, refers to the straight-line distance between an object's starting point and its ending point, measured in a specific direction. It is a vector quantity, which implies it has magnitude alongside its direction.
We may utilize the kinematic equations of motion to solve this problem. The key equation we need is the one that relates the vertical displacement of an object to its initial vertical velocity, acceleration due to gravity, and time:
Δy = v₀y × t + (1/2)gt²
where Δy is the vertical displacement, v₀y is the initial vertical velocity, g is the acceleration due to gravity (9.8 m/s²), and t is the time of flight.
In this case, we know that the vertical displacement is 5.00 km (5000 m), the initial vertical velocity is 0 m/s (since the person is running horizontally off the cliff), and the acceleration due to gravity is -9.8 m/s² (negative because it acts in the opposite direction to the person's motion). We can quantify t as follows:
5000 = 0t + (1/2) × (-9.8) × t²
t² = (2 × 5000)/9.8
t = √((2 × 5000)/9.8) ≈ 101.04 seconds
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How to convert newton meters to foot pounds
To convert Newton meters (Nm) to foot pounds (ft-lb), you can use the following conversion factor:1 Nm = 0.737562149 ft-lb
A newton meter (Nm) is a unit of torque or moment of force in the International System of Units (SI). It is defined as the amount of torque produced by a force of one newton applied perpendicularly to a moment arm or lever arm of one meter.
In other words, a newton meter is the amount of force required to produce one newton of torque when applied at a distance of one meter from the axis of rotation. It is commonly used in engineering, physics, and other fields to measure torque or rotational force, such as the force required to tighten a bolt or turn a crank.
The newton meter is also equivalent to a joule (J), which is the SI unit of energy, since torque can be thought of as a force acting over a distance. This means that one newton meter of torque is equivalent to one joule of energy.
So, to convert a certain number of Newton meters to foot pounds, you just need to multiply the number of Newton meters by the conversion factor.
For example, let's say you have 50 Newton meters and you want to convert it to foot pounds. Using the conversion factor, you would multiply 50 Nm by 0.737562149 to get:
50 Nm x 0.737562149 = 36.88160745 ft-lb
Therefore, 50 Newton meters is equivalent to approximately 36.88 foot pounds.
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non-volatile memory is temporary and loses its contents when the power is turned off.true/false
The given statement, Non-volatile memory is a type of memory that retains its contents even when the power is turned off is true because non-volatile memory devices are designed to store data in a way that is not dependent on the presence of an external power source.
Non-volatile memory is a type of computer memory that can retain its contents even when the power is turned off. This is different from volatile memory, which loses its contents when the power is turned off.
Examples of non-volatile memory include read-only memory (ROM), flash memory, and magnetic storage devices like hard drives and solid-state drives. These types of memory are used to store data and programs that need to be preserved even when the computer is turned off or loses power.
Therefore, the statement that non-volatile memory is temporary and loses its contents when the power is turned off is true. Non-volatile memory is designed to retain its contents even when the power is turned off, making it an essential component of computer systems.
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A box is sliding with a speed of 4.50 m/s4.50 m/s on a horizontal surface when, at point P�, it encounters a rough section. On the rough section, the coefficient of friction is not constant, but starts at 0.1000.100 at P� and increases linearly with distance past P�, reaching a value of 0.6000.600 at 12.5 m12.5 � past point P�.A. Use the work-energy theorem to find how far this box slides before stopping.B. What is the coefficient of friction at the stopping point?C. How far would the box have slid if the friction coefficient didn't increase, but instead had the constant value of 0.1000.100?
A) The box slides for a distance of 10.23 meters before stopping.
B) The coefficient of friction at the stopping point is 0.432.
C) If the coefficient of friction were constant at 0.1, the box would slide for a distance of 10.84 meters.
A) The force of friction acting on the box is given by:
f = μmg,
where μ is the coefficient of friction, m is the mass of the box, and g is the acceleration due to gravity. The coefficient of friction varies linearly with distance past point P, and can be expressed as:
μ(x) = 0.1 + 0.04(x - 2),
where x is the distance from point P in meters.
The work done by the force of friction over a small distance dx is:
dW = f dx = (0.1 + 0.04(x - 2))mg dx.
The total work done by the force of friction from point P to the stopping point is the integral of dW over this distance range, which is given by:
W = ∫(0 to D) dW = ∫(0 to D) (0.1 + 0.04(x - 2))mg dx = (0.1mgD + 0.02mgD^2).
Using the work-energy theorem, we can equate the work done by the force of friction to the change in kinetic energy of the box:
W = ΔK = (1/2)mvf^2,
where vf is the final velocity of the box (zero, since it stops).
Solving for the distance D, we get:
D = vf^2 / 2(0.1mg + 0.02mgD) = (vf^2/2mg) / (0.1 + 0.02D).
Substituting the given values, we get:
D = (4.5^2 / 2*9.81) / (0.1 + 0.02D) = 10.23 m.
Therefore, the box slides for a distance of 10.23 meters before stopping.
B) To find the coefficient of friction at the stopping point, we can use the expression for μ(x) and substitute D = 10.23 m:
μ(D) = 0.1 + 0.04(D - 2) = 0.1 + 0.04(10.23 - 2) = 0.432.
Therefore, the coefficient of friction at the stopping point is 0.432.
C) If the coefficient of friction were constant at 0.1 throughout the rough section, the work done by the force of friction would simply be:
W = fD = 0.1mgD.
Using the work-energy theorem as before, we can equate this work to the change in kinetic energy of the box:
W = ΔK = (1/2)mvf^2.
Solving for D, we get:
D = vf^2 / 20.1g = (4.5^2 / 29.81×0.1) = 10.84 m.
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10. An electric kettle is rated as having an input power of 1.50 kW and an efficiency of 65.0%. The kettle is switched on for 2.00 minutes.
How much energy is transferred to the water in the kettle?
The amount of electrical energy transferred to the water in the kettle is found to be 117,000 Joules.
Explain about the term electrical energy?You come into contact with an examples of electrical energy every time you use a battery or plug in an appliance. Another sort of energy can be converted into electrical energy as well. Solar cells and wind turbines are two examples of devices that convert light into electricity.Electrical energy E.
Input Power P = 1.50 kW = 1500 W.
Time t = 2 minutes = 120 seconds.
Efficiency = 65%.
E = P*T
E = 1500*120
E = 180,000 Joules.
Energy transferred = 0.65*180,000
Energy transferred = 117,000 Joules.
Thus, the amount of energy transferred to the water in the kettle is found to be 117,000 Joules.
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how to37celsius to fahrenheit?
37 degree Celsius to Fahrenheit is 98.6°F where Fahrenheit and Celsius are related in that they are both units of temperature measurement.
The formula for converting Celsius (°C) to Fahrenheit (°F) is :
[tex]F = C * 9/5 + 32.[/tex]
To convert 37°C to Fahrenheit (°F), use the formula :
[tex]F = 37 * 9/5 + 32.[/tex]
F = 66.6 + 32
F = 98.6°F
The formula for converting a temperature from Fahrenheit to Celsius is
[tex](F - 32) * 5/9[/tex]. This formula can be used to find the Celsius equivalent of any temperature given in Fahrenheit. This conversion formula takes into account the difference between the two temperature scales, with Fahrenheit being the higher temperature scale and Celsius being the lower temperature scale.
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The classic Millikan oil drop experiment was the first to obtain an accurate measurement of the charge on an electron. In it, oil drops were suspended against the gravitational force by a vertical electric fielda. Given that the oil drop is 0.95 μm in radius and has a density of 905 kg/m3, find the weight of the drop in N.b. If the drop has a single excess electron, find the electric field strength needed to balance its weight.
After solving, a) The weight of it oil drop is 2.42 x 10⁻¹² N, b) the electric field strength needed to balance its weight is -1.51 x 10⁷ N/C
The weight of the oil drop can be calculated using the formula:
weight = mass x gravity
where mass = density x volume and gravity = 9.81 m/s².
The volume of the oil drop can be calculated using the formula for the volume of a sphere:
volume = (4/3) x pi x radius³
Substituting the given values:
volume = (4/3) x pi x (0.95 x 10⁻⁶ m)³ = 2.73 x 10⁻¹⁶ m³
mass = density x volume = 905 kg/m³ x 2.73 x 10⁻¹⁶ m³ = 2.47 x 10⁻¹³ kg
weight = mass x gravity = 2.47 x 10⁻¹³ kg x 9.81 m/s² = 2.42 x 10⁻¹² N
To balance the weight of the oil drop, the electric force on the excess electron must be equal and opposite to the weight of the drop. The electric force on the excess electron can be calculated using the formula:
electric force = charge x electric field
where charge is the charge on the excess electron and electric field is the strength of the electric field.
The charge on an electron is -1.602 x 10⁻¹⁹ C.
Substituting the given values and equating the electric force to the weight of the drop:
charge x electric field = weight
-1.602 x 10⁻¹⁹ C x electric field = 2.42 x 10⁻¹² N
Solving for electric field:
electric field = (2.42 x 10⁻¹² N) / (-1.602 x 10⁻¹⁹ C) = -1.51 x 10⁷ N/C
The negative sign indicates that the electric field is directed upward, opposite to the direction of gravity, in order to balance the weight of the drop.
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1 calorie is defined as the amount of heat required to raise the temperature of 1g of water by
1 calorie is defined as the amount of heat energy required to raise the temperature of 1 gram of water by 1° celcius.
Calorie is defined as a unit to measure the amount of energy of any substance. One calorie is defined as the amount of energy required to raise the temperature of one gram of water by 1ﾟC at 1 atmospheric pressure. The symbol used to represent calorie is cal.
Also one calorie can be defined in the terms of joule. 1 calorie is considered to be equivalant to 4.2 joules.
There are two different types of calories. First one is a small calorie (cal) and the 2nd 1 is large calorie (kcal). The small calorie is used to measure general amount of heat of any substance. Where has the large calorie is used in nutrition to measure the amount of energy content of the food subustances.
Therefore, 1 calorie can be defind as the heat required to raise the temperature of 1 gram of water by 1ﾟC and is equivalant to 4.2 joules.
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huge rolating cloud particles In space gravitate together forming increasingly dense ball, it shrinks size and rolales slower
a. trueb. false
Answer: b
Explanation: no cule
would defining the charge on an electron to be positive have any effect on coulomb’s law?
Yes, defining the charge on an electron to be positive have any effect on coulomb’s law.
If we change the sign of the charge, the magnitude of electric force will not be effected but the direction of the electric force will be changed.
The magnitude of force between the charged particles is directly related to the amount of charge carried by each particle not its sign. This means that the force will not be changed if we alter the sign of the charge.
The direction of electric force between the charge depends on the sign of charge. If the charges carry same sign, the force is repulsive and if the charges carry opposite signs the force would be attractive.
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Match the correct Newton’s laws with the statements.
The first situation that the bird is giving force to its wings to fly , it is related to the first law. The second one the coffee cup stay on rest until any force acts on it is related to the first law.
What are Newton's laws of motion ?Newton's first law of motion states, every objects tends to stay in its current state until an external force acts on it. The second law states that, the force is the product of mass and acceleration. Thus, greater is the mass greater force is needed to accelerate an object.
Third law of motion states that, for every action there is an equal and opposite reaction.
The sailor when pushing the boat, the boat is exerting a force in turn and the man can slide to the land and boat moves away. This is third law of motion.
As the force by the wind increases, its acceleration increases . This is second law. The team with greater mass in tug of war game will have greater force that is just the second law.
The skater board tends to move again even after the hitting, its is first law of Newton.
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