calculate approximately how long it takes light to travel from the sun to pluto

Answers

Answer 1

It takes approximately 5.5 hours for light to travel from the Sun to Pluto

The distance from the Sun to Pluto varies depending on the positions of the two objects in their orbits, as both the Sun and Pluto are constantly moving. However, on average, the distance from the Sun to Pluto is about 5.9 billion kilometers or 3.7 billion miles.

The speed of light is approximately 299,792 kilometers per second or 186,282 miles per second.

Using these values, we can calculate that it takes approximately 5.5 hours for light to travel from the Sun to Pluto

5.9 billion km ÷ 299,792 km/s

=> 19710 seconds

=> 5.5 hours.

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Related Questions

how to convert 60 km to mph?

Answers

60 kilometers per hour (Km) is equal to 37.28 miles per hour.

Distance is the sum of an object's movements, regardless of direction. Distance can be defined and explained as the amount of space an object has covered, regardless of its starting or ending position.

Formula to be used:

mph = km/ 1.609

mph = 60/1.609

= 37.38 mph

The pace at which an object's position changes in any direction is referred to as its speed. The distance traveled in the relation to the time it took to travel that distance is how speed is defined. Since speed simply has a direction and no magnitude, it is a scalar quantity. You must always multiply or divide by 1.6 to determine MPH. When moving at 60 km/h, the calculation is 60/1.609344, or 37.28 mph.

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how is information about magnetic fields recorded in rocks?

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Information about magnetic fields in rocks is recorded through the alignment of magnetic minerals, such as magnetite, with the Earth's magnetic field at the time the rock was formed.

As magma or lava cools and solidifies, the magnetic minerals become "frozen" in place and retain the orientation of the Earth's magnetic field. By studying the magnetic orientation of rocks, scientists can determine the direction and strength of the magnetic field at the time the rock was formed, as well as track the movement of the Earth's magnetic poles over time.

This technique is called paleomagnetism and has been used to study the Earth's magnetic field history over millions of years.

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__________ takes place when an object is given a charge by bringing it close to a charged object.

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The answer is Induction. "Induction" takes place when an object is given a charge by bringing it close to a charged object.

Induction is that process in which an object acquiring a charge by coming into the contact with any of the charged object. During that induction, electric field of the charged object induces an electric field in the uncharged object.

This electric field creates an electric dipole moment in uncharged object, that causing its charges to move and redistribute themselves in such a way that object acquires the net charge. This process occurs without any of physical contact between two objects and is also used to charge the objects like capacitors.

Induction can also be used to create a current loop in any conductor, which can be used to measure or to detect the strength of the specific magnetic field.

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Which best approximates the resultant of a pair of 6-unit vectors at right angles to each other?
a. 0 units
b. 6 units
c. 8 units
d. 12 units

Answers

The required resultant of a pair of 6-unit vectors at right angles to each other is calculated to be 8 units. Correct option is C.

The resultant of the two vectors is the vector that produces the same effect as the combination of the individual vectors. When two vectors are mutually perpendicular to each other, then the resultant vector passes through the point from both originate.

The magnitude of vectors is 6 units.

As the two vectors are said to be perpendicular to each other, we have resultant vector as,

R = √6² + 6² = √72 = 8.49 units ≈ 8 units

Thus, the required resultant of a pair of 6-unit vectors at right angles to each other is calculated to be 8 units.

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a small car (mass 380. kg) is pushing a large truck (mass 900. kg) due east on a level road. the car exerts a horizontal force of 2345 n on the truck. if the truck is accelerating at 2.50 m/s2, what is the magnitude of the net force on the truck?

Answers

The magnitude of the net force on the truck is 2070.5 N.

What is frictional force?

Frictional force is the force that opposes motion or attempted motion between two surfaces in contact. It arises as a result of the interlocking of irregularities on the surfaces in contact, and it acts in the direction opposite to the direction of motion or attempted motion.

Frictional force can be classified into two types: static friction and kinetic friction. Static friction is the force that prevents an object from moving when a force is applied to it, while kinetic friction is the force that opposes the motion of an object that is already in motion.

The normal force is equal to the weight of the truck, which can be calculated as:

weight = mass x gravity

where gravity is approximately 9.81 m/s^2.

So the weight of the truck is:

weight = 900 kg x 9.81 m/s^2 = 8829 N

Therefore, the normal force is:

normal force = weight = 8829 N

And the frictional force is:

frictional force = 0.5 x 8829 N = 4414.5 N

Next, we can find the net force on the truck by subtracting the force of friction from the force exerted by the car:

net force = 2345 N - 4414.5 N = -2070.5 N

Note that the negative sign indicates that the net force is in the opposite direction to the force exerted by the car, which makes sense since the truck is slowing down.

Finally, we can use Newton's second law to find the acceleration of the truck:

net force = mass x acceleration

-2070.5 N = 900 kg x acceleration

acceleration = -2.3 m/s^2

Again, the negative sign indicates that the truck is slowing down.

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buck-boost transformers are typically available in sizes up to ? .

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Buck-boost transformers are typically available in sizes up to 10kVA.

Buck-boost transformers can be used as isolating transformers and are usually used to lower or raise line voltage. They are available in a range of sizes, ranging from 50 volt amperes to 360 kVA. Additionally, buck-boost transformers are in compliance with NEC and are typically used to buck (lower) or boost (raise) the supply voltage a small amount, usually 5 to 27%. Buck Boost Transformers can protect connected equipment from damage by reducing or raising line voltage 5% to 20%. Primary and secondary lead wires can be interconnected for use as an autotransformer. For use in induction motors and air conditioning, lighting, and heating systems.

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For the equation below:

Eel = 1/2KX ^2

What happens to elastic energy if you decrease the stretch value on a spring?

Answers

The stored elastic potential energy decreases.

What happens to the elastic potential energy when we compress the spring?

When we compress a spring, we apply a force that compresses the coils of the spring closer together. This causes the spring to store elastic potential energy, which is the energy that the spring possesses due to its deformation. This potential energy is a form of mechanical energy that can be converted into other forms of energy, such as kinetic energy or thermal energy.

When the compressed spring is released, the stored elastic potential energy is converted into kinetic energy as the spring expands and the compressed coils of the spring move apart hence the store elastic potential energy decreases.

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Two more balloon like objects were shot down over ___ and northern canada.

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"Two more balloon like objects were shot down over the United States and northern Canada."

North American nations include Canada and the United States of America. Recent confirmation from the governments of both nations that balloon-like objects were shot down while passing over their territory.

There is a great deal of controversy regarding the items and how the various nations are handling them. They are tools used by the Chinese government to eavesdrop, according to the American government. Beijing, however, refutes the allegations and claims that their balloon was utilised for meteorological reasons. We cannot definitively say that all flying objects originate from China or serve one particular function because not all of them have been correctly identified.

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what is the required number of known physical variables that are needed to solve for the unknown quantities using the kinematic equations?

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When analyzing the motion of a single object, four known physical variables are needed to solve for the unknown quantities using the kinematic equations.

These variables are displacement (s), velocity (v), acceleration (a), and time (t). When solving for the unknown quantities, you can use any combination of the four variables to solve for the desired unknown. For example, if you know the acceleration, displacement, and time, you can use the equation at^2/2 + vt + s = 0 to solve for the velocity. Similarly, if you know the velocity, displacement, and time, you can use the equation v^2 = 2as + v0^2 to solve for the acceleration.

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A bullet of mass m1 is fired horizontally with a speed vo into the bob of a ballistic pendulum of mass m2. The pendulum consists of a bob attached to one end of a very light rod of length l. The rod is free to rotate about a horizontal axis through its other end. The bullet is stopped in the bob. Find the minimum vo such that the bob will swing through a complete circle

Answers

The minimum velocity vo required for the bob to swing through a complete circle is:

[tex]vo = \sqrt\frac{(m1v02 + m2v02 - m2g2l2)}{m1}[/tex]

Using conservation of energy, we can solve for the minimum velocity required for the bob to swing through a complete circle.

The total initial energy of the system is:

[tex]Ei =\frac{1}{2} m1v02 +\frac{1}{2} m2v02[/tex]

The total final energy of the system is:

[tex]Ef = \frac{1}{2} m2vf2 + mg2l2[/tex]

where vf is the velocity of the bob after the collision and g is the gravitational acceleration.

Equating the initial and final energy, we have:

[tex]\frac{1}{2}m1v02 +\frac{1}{2} m2v02 =\frac{1}{2}m2vf2 + mg2l2[/tex]

Solving for vf, we have:

[tex]vf = \sqrt{} \frac{(m1v02 + m2v02)}{m2 - g2l2}[/tex]

The minimum velocity required for the bob to swing through a complete circle is given by the expression:

[tex]vo = \sqrt \frac{(m2vf2 + mg2l2)}{m1}[/tex]

Substituting the expression for vf, we have:

[tex]vo = \sqrt{ \frac{(\frac{m2(m1v02 + m2v02)}{m2 - g2l2})}{m1}[/tex]

[tex]vo = \sqrt\frac {(m1v02 + m2v02 - m2g2l2)}{m1}[/tex]

Therefore, the minimum velocity vo required for the bob to swing through a complete circle is:

[tex]vo = \sqrt\frac{(m1v02 + m2v02 - m2g2l2)}{m1}[/tex]

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a test rocket is fired straight up from rest with a net acceleration of 20.0 m/s2. after 4.00 seconds the motor turns off, but the rocket continues to coast upward with no appreciable air resistance. what maximum elevation does the rocket reach?

Answers

The maximum elevation reached by the rocket is 81.5 meters. We utilize equations of motion for acceleration that is constant.

We can break down the motion of the rocket into two parts: the initial acceleration phase and the subsequent coasting phase.

During the initial acceleration phase, the rocket experiences a constant net acceleration of [tex]20.0 m/s^2[/tex]. Therefore, the velocity of the rocket after 4 seconds can be calculated as seconds can be calculated as:

v = u + at

where u is the initial velocity (which is zero in this case), a is the acceleration, and t is the time elapsed.

v =[tex]0 + 20.0 m/s^2 * 4.00 s[/tex]

v = 80.0 m/s

Next, we can calculate the maximum height reached by the rocket during the coasting phase. Since there is no appreciable air resistance, we can assume that the rocket experiences a constant deceleration equal to the acceleration due to gravity ([tex]-9.81 m/s^2[/tex]). Therefore, the maximum height reached by the rocket can be calculated as:

[tex]s = ut + (1/2)at^2[/tex]

where s is the displacement, u is the initial velocity (which is 80.0 m/s in this case), a is the deceleration (-9.81 m/s^2), and t is the time elapsed since the motor turned off (which is 4 seconds).

s = [tex]80.0 m/s * 4.00 s + (1/2)(-9.81 m/s^2)(4.00 s)^2[/tex]

s = 160.0 m - 78.48 m

s = 81.5 m

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A 10.0 N force is applied to a 2.00 kg mass, what is its velocity of the mass at 10.0 s?

Answers

Answer:

The velocity of the mass after 10.0 seconds is 50.0 m/s.

Explanation:

Explanation: We can use the formula v = (F t)/m to calculate the velocity of the mass. Given that the force applied is 10.0 N, the mass is 2.00 kg, and the time elapsed is 10.0 s, we can substitute these values into the formula to get:

v = (10.0 N * 10.0 s) / 2.00 kg = 50.0 m/s

Therefore, the velocity of the mass after 10.0 seconds is 50.0 m/s.

physics textbook how many electrons make up a charge of -30.0uc

Answers

18.7245273 × 10¹⁰ electrons make up a charge of -30.0uc.

An electron is a negatively charged particle having a charge of -1.60217663 × 10-19 coulombs.

According to Planck's theory of quantum, the charge of any quantum particle is quantized which means that any charge is multiple of a fixed quanta of charge,

i.e.

Q = n.e

in the given question,

Q = 30 nC = 30 × 10-⁹ C

e = -1.60217663 × 10-¹⁹ C

so, the number of electrons "n" will be,

n = Q/e = (30 × 10-⁹ C)/(-1.60217663 × 10-¹⁹ C)

n = 18.7245273 × 10¹⁰ electrons

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of the following, which color represents the lowest surface temperature for a star? yellow, orange, red, white, and blue

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The color represents the lowest surface temperature for a star is option (3) red

The surface temperature of a star is one of the key factors that determine its color. The color of a star also depends on its composition, size, and distance from us, but temperature is the most important factor.

Stars emit light across a wide range of wavelengths, from radio waves to gamma rays. The peak of this emission is determined by the star's surface temperature, following a pattern called Planck's law. Hotter stars emit more blue and violet light, while cooler stars emit more red and infrared light.

The sequence of colors that represent the different surface temperatures of stars is commonly referred to as the "spectral sequence" or "color sequence". This sequence starts with blue stars (the hottest), followed by white, yellow, orange, and red stars (the coolest).

Therefore, the correct option is (3) red

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expalin how a free body diagran allows you to slove for force problems

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A free body diagram allows us to analyze the forces acting on an object or system, and by using Newton's laws of motion, we can solve for force problems and understand the motion of the object or system.

What is free body diagram?

A free body diagram (FBD) is a graphical representation that shows all the forces acting on an isolated object or a system. By creating a FBD, we can analyze the forces acting on the object and use Newton's laws of motion to solve for force problems.

To create a free body diagram FBD, we draw a diagram of the object or system with all external forces acting on it shown as arrows. These forces include weight, normal force, friction, tension, and any other forces that are present. It is important to note that only external forces are included in a FBD, as internal forces cancel each other out.

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What is voltage divider formula?

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Voltage divider formula is a circuit formula used to calculate the output voltage of a circuit that is divided between two resistors. It is [tex]Vout = Vinx(R2/(R1+R2)[/tex]

A voltage divider circuit consists of two resistors in series with an input voltage applied across them, and the output voltage is taken from the point between the two resistors. The voltage divider formula:

[tex]Vout = Vin x (R2 / (R1 + R2))[/tex]

Vout: circuit's output voltage of the circuit

Vin: circuit's input voltage

R1: circuit's resistance value of first resistor

R2: circuit's resistance value of the second resistor

The voltage divider formula shows that the output voltage of the circuit is proportional to the ratio of the two resistors. If the value of R2 is increased, the output voltage will increase, and if the value of R1 is increased, the output voltage will decrease.

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For our first example of motion in a plane, suppose you are operating a radio-controlled model car on a vacant tennis court. The surface of the court represents the x-y plane, and you place the origin at your own location. At time t1=2. 0s the car has x and y coordinates (4. 0 m, 2. 0 m), and at time t2=3. 1s it has coordinates (7. 0 m, 6. 0 m). For the time interval from t1 to t2, find (a) the components of the average velocity of the car and (b) the magnitude and direction of the average velocity.


1) Suppose you reverse the car’s motion, so that it retraces its path in the opposite direction in the same time. Find the x-component of the average velocity of the car.


2) Find the y-component of the average velocity of the car.


3) Find the magnitude of the average velocity.


4) Find the direction of the average velocity

Answers

1) The x-component of the average velocity of the car is -3.0 m/s

2) The y-component of the average velocity of the car is 4.0 m/s

3) The magnitude of the average velocity is 5.0 m/s

4) The direction of the average velocity is 126.9 degrees

How did we get the values?

(a) The components of the average velocity of the car are:

Average velocity in x-direction = (change in x-coordinate) / (time interval) = (7.0 m - 4.0 m) / (3.1 s - 2.0 s) = 3.0 m/s

Average velocity in y-direction = (change in y-coordinate) / (time interval) = (6.0 m - 2.0 m) / (3.1 s - 2.0 s) = 4.0 m/s

(b) The magnitude and direction of the average velocity can be found using the Pythagorean theorem and trigonometry. The magnitude is:

|average velocity| = sqrt((average velocity in x-direction)^2 + (average velocity in y-direction)^2)

= sqrt((3.0 m/s)^2 + (4.0 m/s)^2)

= 5.0 m/s

The direction of the average velocity is:

theta = arctan(average velocity in y-direction / average velocity in x-direction)

= arctan(4.0 m/s / 3.0 m/s)

= 53.1 degrees (measured counterclockwise from the positive x-axis)

So the magnitude of the average velocity is 5.0 m/s, and its direction is 53.1 degrees counterclockwise from the positive x-axis.

When the car retraces its path in the opposite direction in the same time, the change in the x-coordinate is negative. Therefore, the x-component of the average velocity is:

Average velocity in x-direction = (change in x-coordinate) / (time interval) = (4.0 m - 7.0 m) / (3.1 s - 2.0 s) = -3.0 m/s

The y-component of the average velocity does not change when the car retraces its path, so it is still 4.0 m/s.

The magnitude of the average velocity is still 5.0 m/s, because it depends only on the change in the x-coordinate and y-coordinate, which are the same regardless of the direction of motion.

The direction of the average velocity is now 126.9 degrees counterclockwise from the positive x-axis, because the car is moving in the opposite direction along the same line.

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fiberglass is a good insulator because it traps __________, which is not a good conductor.

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Fiberglass is a good insulator because it traps air, that is not a good conductor.

Insulators are matter that do not conduct heat or electricity well and are often used to reduce or avert the transfer of heat or electricity between objects or environments. Fiberglass is a type of insulation material made of fine glass fibers that are woven together into a mass.

In inclusion to being a good thermal insulator, fiberglass is also a good acoustic insulator. The fibers can trap sound waves, reducing their transmission and absorption.

This makes fiberglass shelter commonly used in building construction to reduce noise transfer between rooms or from outside sources.

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I’m in need of help!!

Density is the measure of how much mass is contained in a given unit volume. Based on the data for the four samples, which of the following substances has the lowest density?

Answers

The substance with the lowest density is Sample 1 with a density of approximately 2.31 g/cm³ .

What is density of a given substance?

Density is a physical property that describes the amount of mass per unit volume of a substance. It can be calculated by dividing the mass of a substance by its volume.

To determine the substance with the lowest density, we need to calculate the density of each sample using the formula:

density = mass / volume

Sample 1: density = 30 g / 13 cm³ ≈ 2.31 g/cm³

Sample 2: density = 72 g / 20 cm³ = 3.6 g/cm³

Sample 3: density = 22 g / 2 cm³ = 11 g/cm³

Sample 4: density = 103 g / 41 cm³ ≈ 2.51 g/cm³

Comparing the densities, we can see that Sample 3 has the highest density (11 g/cm^3) and thus it is not the substance with the lowest density. Sample 2 has a density of 3.6 g/cm³ , which is higher than both Sample 1 (2.31 g/cm^3) and Sample 4 (2.51 g/cm^3).

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A box weighing 25 N is lifted to a height of 1.1 m by sliding it up a ramp 3.2 m long. The person pushing the box exerts a force of 9.9 N.

What is the mechanical advantage of the ramp?

b. What is the machine's efficiency?

5. What is the power of a crane that lifts a 120 N load 14 m in 3.6 s?

Answers

Answer:

a. The mechanical advantage of the ramp is:

Mechanical advantage = length of ramp / height

Mechanical advantage = 3.2 m / 1.1 m

Mechanical advantage = 2.91

b. The efficiency of the machine is the ratio of output work to input work, expressed as a percentage. In this case, the output work is the work done on the box (force x distance), which is:

Output work = force x distance

Output work = 25 N x 1.1 m

Output work = 27.5 J

The input work is the work done by the person pushing the box, which is:

Input work = force x distance

Input work = 9.9 N x 3.2 m

Input work = 31.68 J

The efficiency of the machine is:

Efficiency = (output work / input work) x 100%

Efficiency = (27.5 J / 31.68 J) x 100%

Efficiency = 86.8%

Therefore, the efficiency of the machine is 86.8%.

c. The power of the crane is given by the formula:

Power = work / time

where work is the product of force and distance, and time is the duration over which the work is done.

In this case, the work done by the crane is:

Work = force x distance

Work = 120 N x 14 m

Work = 1680 J

The time taken to lift the load is 3.6 s. Therefore, the power of the crane is:

Power = work / time

Power = 1680 J / 3.6 s

Power = 466.7 W

Therefore, the power of the crane is 466.7 watts.

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Explanation:

why does warm, moist air start to uplift in the initial stages of thunderstorm development?'

Answers

Warm, moist air starts to uplift in the initial stages of thunderstorm development because of a combination of different lift mechanisms.

One of these is convective lift, which occurs when warmer air rises due to its buoyancy. This is because warm air is less dense than cooler air, and so it is more easily displaced by the cooler air. Another lift mechanism is orographic lift, which is the result of air being forced to rise as it moves over a mountain or hill. Finally, frontal lift occurs when a cold front moves into an area of warm, moist air, forcing it to rise. All of these lift mechanisms can combine to cause warm, moist air to be lifted and form a thunderstorm.

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how to calculate heat of vaporization given pressure and temperature

Answers

The required heat of vaporization is calculated when the pressure and temperature are given using the Clausius-Clapeyron equation.

The mathematical equation of Clausius-Clapeyron is given as,

ln(P₁/P₂) = -ΔHvap/R (1/T₂ - 1/T₁)

where,

P₁, P₂ are the vapour pressures at two temperatures T₁, T₂

ΔHvap is enthalpy of vapourization

R is gas constant

When the temperature reaches a certain level, known as the critical temperature, the heat of vaporisation entirely disappears.

Latent heat of condensation grows as pressure rises, while latent heat of vapourization decreases.

By substituting the required values in the above equation, we get the heat of vaporization value.

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Please answer this subject is science

Answers

1. 15 m

2. 71.5 m

3. not sure but maybe 10 9/13 s

what is ca oh 2 molar mass

Answers

Ca(OH)2 has a molar mass of 74.092 g/mol.

Calcium hydroxide, sometimes referred to as slaked lime, has the chemical formula Ca(OH)2. It is an inorganic material that when solid appears white and powdered.

The atomic masses of each element in the periodic table must fist be determined.

Ca = 40.078 (Calcium)

O(Ozone) = 15.999

1.008 H(Hydrogen)

The following equation can be made:

40.078 + (15.999 + 1.008) × 2

40.078 + (17.007) × 2

40.078 + 34.014

= 74.092 g/mol

The molar mass, or molecular mass, of Ca(OH)2 is 74.093 grammes. Th molecule consists of one calcium atom, two oxygen atoms, and two hydrogen atoms. Their molar masses are totaled in this The molar mass of Ca(OH)2 is 74.092 g/mol.

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What is law of universal gravitation meaning?

Answers

The law of universal gravitation states that every particle in the universe attracts every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

The law states that every object in the universe attracts every other object with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

This means that the larger the masses of the objects and the closer they are to each other, the stronger the force of attraction will be. The law of universal gravitation helps explain many phenomena in the universe, including the orbits of planets and moons round their parent bodies, as well as the motion of stars and galaxies.

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what is the frequency of a 90 kev x-ray photon?

Answers

The frequency of a 90 keV X-ray photon is [tex]2.175 \times 10^{19} \ Hz[/tex].

The frequency of an X-ray photon can be determined using the Planck-Einstein relation, which states that the energy of a photon is directly proportional to its frequency. The equation is:

E = h * f

where E is the energy of the photon, h is Planck's constant

([tex]6.626 \times 10^{-34}[/tex] J s), and f is the frequency of the photon.

To find the frequency of a 90 keV X-ray photon, we need to convert the energy from keV (kiloelectron volts) to joules, since the units of Planck's constant are in joule-seconds. We can do this by multiplying the energy in keV by the electron charge ([tex]1.602 \times 10^{-19 }[/tex]C) to convert it to joules:

90 keV * (1[tex]1.602 \times 10^{-19 }[/tex] C) = [tex]1.4428 \times 10^{-14}[/tex] J

Now we can use the Planck-Einstein relation to find the frequency:

E = h * f

f = E / h

f = [tex]1.4428 \times 10^{-14}[/tex] / ([tex]6.626 \times 10^{-34}[/tex] J s)

f =[tex]2.175 \times 10^{19}[/tex] Hz

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The image below shows a force of 10 N being applied to an object. The force is being applied toward the right, and the object is accelerating toward the right. No other force is acting on the object. Examine the image, and then answer the question that follows.


A second force of 13 N is applied to the object. If this second force is applied toward the left while the first force is being applied toward the right, which of the following will occur?
A.
The object will immediately begin moving toward the left.
B.
The object will continue moving toward the right at the same speed.
C.
The object will continue accelerating toward the right.
D.
The object will immediately accelerate toward the left.

Answers

Answer:

the answer is A, the object will immediately begin moving toward the left.

how to convert pascals to atm

Answers

To convert pascals (Pa) to atmospheres (atm), you can use the following conversion factor: 1 atm = 101325 Pa

Pascal (symbol: Pa) is the unit of pressure in the International System of Units (SI). It is defined as the force of one newton acting over an area of one square meter.

In other words, the pascal is a measure of the pressure or stress on a surface that results from a force being applied uniformly over that surface. For example, if you apply a force of 100 newtons over an area of 1 square meter, the pressure would be 100 pascals (since 1 Pa = 1 N/m^2).

The pascal can also be expressed in terms of other units, such as the bar (1 bar = 100,000 Pa) or the atmosphere (1 atm = 101,325 Pa). The pascal is commonly used in many fields of science and engineering, including fluid mechanics, aerodynamics, and material science. It is also used to express other physical quantities such as stress, strain, and modulus of elasticity.

This means that one atmosphere is equal to 101325 pascals. To convert pascals to atmospheres, you can divide the pressure value in pascals by 101325.

For example, to convert 500000 Pa to atm:

500000 Pa / 101325 = 4.93 atm (rounded to two decimal places)

Therefore, 500000 Pa is approximately equal to 4.93 atm.

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What is the average power output of a weightlifter who can lift 250 kg a height of 2.0 m in 2.0 s?

Answers

The average power of the weightlifter who can lift 250kg a height of 2.0 m in 2.0s is 2500watts.

How to calculate power?

Power is a measure of the effectiveness that a force producing a physical effect has over time.

Power can be calculated by dividing the work done by an object by time taken. However, according to this question, a weightlifter can lift 250 kg a height of 2.0 m in 2.0 s.

Power = mgh/t

Where;

m = massg = acceleration due to gravityh = heightt = time

Power = 250 × 10 × 2 ÷ 2

Power = 2500watts

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If a car moving at a steady speed rounds a corner at 60 km/h, does it maintain a constant speed? Maintain a constant velocity? Defend your answers. Match the words in the left column to the appropriate blanks in the sentences on the right 1. The ______ is constant and the ______ changes 2. Thus, the car ______ a constant speed and it a ______ a constant velocity - does not maintain - distance - instantaneous speed
- maintains - direction of motion

Answers

The speed is constant and the direction of motion changes.

Thus, the car maintains a constant speed and it does not maintain a constant velocity - the instantaneous speed varies as it goes around the corner due to the change in direction of motion.

What happens to the car's velocity when it rounds a corner?

When a car rounds a corner at a steady speed, it changes its direction of motion, and therefore, its velocity changes as well. Velocity is a vector quantity that takes into account both the speed and direction of an object's motion. Since the direction changes, the velocity changes as well. However, if the car maintains the same speed throughout the turn, then the speed remains constant. Speed is a scalar quantity that only takes into account the magnitude of an object's motion, and it is measured as the distance traveled per unit of time.

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