The velocity of the second particle before the collision was (-5.71, -4.29) m/s.
Solving for the velocity of the second particle before the collision:
We can use conservation of momentum to solve this problem. In an isolated system like this, the total momentum before the collision is equal to the total momentum after the collision. Mathematically, we can write:
m₁v₁ + m₂v₂ = (m₁ + m₂)v'
where,
m₁ and v₁ = the mass and velocity of the first particle before the collision, m₂ and v₂ =the mass and velocity of the second particle before the collision
v' = the velocity of both particles after the collision.
Since the particles come to rest after the collision, v' = (0, 0) m/s.
Plugging in the given values, we get:
(5 kg)(8, -9) m/s + (2 kg)v₂ = (5 kg + 2 kg)(0, 0) m/s
Simplifying and solving for v₂, we get:
v₂ = -20/7 (4, 3) m/s
Hence, the velocity of the second particle before the collision was approximately (-5.71, -4.29) m/s.
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The pressure drop over a certain length of horizontal pipe is assumed to be a function of the velocity
The pressure drop over a certain length of horizontal pipe is assumed to be a function of the velocity is true because of the relationship between fluid flow and pressure, which is described by the Bernoulli's principle.
The pressure drop over a certain length of horizontal pipe is typically related to the flow rate through the pipe, which is in turn related to the velocity of the fluid. This relationship is described by the Darcy-Weisbach equation,
ΔP = f (L/D) (ρV^2/2)
Where ΔP is the pressure drop, L is the length of the pipe, D is the diameter of the pipe, ρ is the density of the fluid, V is the average velocity of the fluid, and f is the friction factor, which depends on the roughness of the pipe surface and the Reynolds number of the flow.
This equation shows that the pressure drop is proportional to the square of the velocity of the fluid, which means that as the velocity increases, the pressure drop will also increase. Therefore, the pressure drop over a certain length of horizontal pipe can be related to the velocity of the fluid flowing through it.
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what is the relationship of the slope to the moving object?
A slanted line on a distance-time graph indicates that the object is moving. On a graph of a distance versus time, the line's gradient or slope equals the object's speed. The steeper the line, the faster the thing moves (and the greater the gradient).
The slope of the line increases with line steepness, and the rate of change of the object's motion increases with line steepness. The idea behind this is that the slope of a line on a position-time graph is equal to the object's velocity. The line's slope will be +4 m/s if the object is moving at a +4 m/s speed. If the object is travelling at a speed of -8 m/s, the line will slope by that amount. You may determine speed from the slope or steepness of a line. The speed increases with increasing slope steepness (greater verticality). Slow speed results from a flatter (more horizontal) slope. If the line is entirely horizontal or flat, the object is stopped or moving at a standstill.
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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?
The speed at which an object's velocity changes in relation to time is referred to as acceleration. The rocket has a maximum altitude of 486.5 meters.
Acceleration:
The speed at which an object's velocity changes in relation to time is referred to as acceleration. Vector quantities are accelerations. Assuming that it accelerates for four seconds and has a net upward acceleration of twenty meters per second². Consequently, during the acceleration phase, the rocket's highest altitude is
y = y₀ + ut + ½ at²
y = 0 + (0)(4) + ½ (20) (4)²
y = 160
Currently, the rocket's speed during the acceleration phase is,
v = at + u
v = (20) (4) + 0
v = 80
Therefore , after the rocket's motor is switched off, the highest point it can reach is,
v² = v₀² + 2a (y − y₀)
(0)² = (80)² + 2(-9.8) (y − 160)
Using the provided equation to find y,
y ≈ 486.5
Hence, the rocket may go as high as 486.5 meters.
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of the following, which color represents the lowest surface temperature for a star? yellow, orange, red, white, and blue
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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how many miles is 10 km
10 kilometers (km) is equal to approximately 6.2137 miles.
The mile is a unit of length commonly used in the United States, while the kilometer is the standard unit of length in the metric system used in most other parts of the world.
To convert kilometers to miles, we can use the conversion factor of 1 kilometer is equal to 0.621371192 miles. Multiplying 10 km by this conversion factor gives us the result: 10 km x 0.621371192 miles/km = 6.2137 miles
Therefore, 10 kilometers is equivalent to approximately 6.2137 miles. This conversion can be useful in a wide range of contexts, such as when traveling internationally, calculating distances for athletic events, or comparing the fuel efficiency of vehicles that use different units of measurement.
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for object 1 to have a higher absolute temperature than object 2, object 1 must have a —
"For object 1 to have a higher absolute temperature than object 2, object 1 must have a higher average internal kinetic energy."
The temperature of an item on a scale where 0 is assumed to be absolute zero is known as its absolute temperature, also known as thermodynamic temperature. The Kelvin and Rankine gauges measure absolute temperature. The temperature at which a machine has the least amount of energy is called absolute zero.
These molecules and atoms move more rapidly when something is heated, providing it with more thermal energy. Compared to frigid water, hot water has more thermal energy. Molecules and atoms in colder things move more slowly and have less thermal energy than those in warmer ones.
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Calculate the ratio of the drag force on a jet flying at 1000km/h at an altitude of 10 km to the drag force on a prop-driven transport flying at half that speed and altitude. The density of of air is 0.38 kg/m3 at 10 km and 0.67 kg/m3 at 5.0 km. Assume thhat the airplanes have the same effective cross-sectional area and drag coefficient C.
The ratio of the drag force on the jet to the drag force on the prop-driven transport is approximately 3.43.
The drag force on an airplane is given by the formula,
Fd = (1/2) * rho * v^2 * A * C
where Fd is the drag force, rho is the density of air, v is the velocity of the airplane, A is the effective cross-sectional area, and C is the drag coefficient.
For the jet flying at 1000 km/h at an altitude of 10 km,
Fd_jet = (1/2) * 0.38 kg/m^3 * (1000 km/h)^2 * A * C
For the prop-driven transport flying at half the speed and altitude,
Fd_prop = (1/2) * 0.67 kg/m^3 * (500 km/h)^2 * A * C
Fd_jet/Fd_prop = [(1/2) * 0.38 kg/m^3 * (1000 km/h)^2]/[(1/2) * 0.67 kg/m^3 * (500 km/h)^2]
Simplifying this expression,
Fd_jet/Fd_prop = (0.38/0.67) * (1000/500)^2
Fd_jet/Fd_prop ≈ 3.43
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what is online calculator of resistor color code
An online calculator of resistor color code is a tool that allows you to determine the value of a resistor based on the color bands that are marked on it.
To use the online calculator, you simply enter the colors of the bands on the resistor, and the calculator will provide you with the value of the resistor in ohms.
Some online calculators may also provide additional information, such as the tolerance and temperature coefficient of the resistor.
There are many online calculators of resistor color code available on the internet. Some popular examples include the calculators provided by Digi-Key, Ohm's Law Calculator, and RapidTables.
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how to convert 354 f to c?
354°F = 178.89 °C.
The temperature can be converted by first multiplying 354 by 9 over 5. Then, to get 80.6 degrees Fahrenheit, multiply 354 by 48.6.
The temperature scale known as the Fahrenheit scale was derived from one that physicist Daniel Gabriel Fahrenheit suggested in 1724. The unit is the degree Fahrenheit.
On the Celsius scale, one of the two temperature scales used in the International System of Units (the other being the Kelvin scale), the unit of temperature is the degree Celsius.
Fahrenheit was an early developer of the thermometer as we know it, thus he naturally needed to mark out different temperatures on them. He created the scale that is today known as Fahrenheit.
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state the name of the store that has less energy at the end than it had at the start
The store that has less energy at the end than it had at the start is called a net energy loss store.
What is energy?Energy is the capacity to do work or to produce heat, light, or other forms of energy. It exists in several forms such as kinetic energy (energy of motion), potential energy (stored energy), electrical energy, thermal energy, light energy, gravitational energy, sound energy, and chemical energy. Energy can be converted from one form to another such as electricity is typically generated from the conversion of mechanical energy. Energy is essential for the functioning of the universe, from stars and galaxies to the complex systems of the human body. Conservation of energy is an important concept in physics and everyday life, as it enables us to maximize the useful energy available from a given source and minimize waste.
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Fill The blank? light energy with very low amplitude would be perceived as ________.
Light energy with very low amplitude would be perceived as DIM.
What is the amplitude of light?Amplitude in mild refers to the quantity of strength in an electromagnetic wave and that means is identical here. Amplitude refers to the gap of the most vertical displacement of the wave from its suggest position. The large the amplitude, the better the strength.
Given, a certain light energy with very low amplitude
The wavelength of light energy determines its color, not the amplitude of the light wave. Brightness is related to amplitude.
Since, The amplitude of a wave, in simple terms, is related to the amount if the energy it carries with itself. A wave of high amplitude will carry high energy and a wave with low amplitude carries low energy.
thus,
Light energy with a very high amplitude would be perceived as very bright.
Therefore, Light energy with very low amplitude would be perceived as DIM.
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what is ccl4 compound name
Tetrachloromethane is the name given to the CCl4 chemical.
Structure of carbon tetrachloride chemically. The liquid CCl4 is transparent, nonflammable, and heavy. It evaporates quickly and has a distinctive sweet smell that is similar to that of chloroform. The term "volatile organic compound" refers to CCl4 (VOC).
The secondary prefix for four carbon atoms is tetra. The first prefix for chlorine is chloro. Meth represents the word's root, which is carbon. Tetrachloromethane, which may also be written as 1,1,1,1, is the name of the substance. a week ago With the chemical formula CCl4, carbon tetrachloride is an organochlorine chemical compound that goes by several different names.
covalent substance Since it has four non-polar covalent connections between carbon and chlorine, carbon tetrachloride (CCl4) is classified as a covalent molecule.
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how to convert 60c to fahrenheit?
There are 140 degrees Fahrenheit in 60 degree Celsius.
For conversion of temperatures of degrees Fahrenheit to degrees Celsius, we need to multiply the result by.5556 (or 5/9) after subtracting 32 to it. While converting any value from degrees Celsius to Fahrenheit, we need to multiply the result by 1.8 (or 9/5) and then by 32.
According to question:
The Fahrenheit, Celsius, Kelvin, all these are the scales which are used to measure temperature. Celsius (°C) is a metric scale and Fahrenheit (°F) is an imperial scale. To convert a temperature from Celsius to Fahrenheit, you can use the formula:
°F = (°C × 9/5) + 32. In this case, 60°C × 9/5 = 108 and 108 + 32 = 140°F.
It's important to know both scales because they are used in different parts of the world and in different fields, such as meteorology, medicine, and cooking. Understanding how to convert between these two temperature scales is a valuable skill for anyone dealing with temperature measurements.
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A 65-kg male ice skater is facing a 45-kg female ice skater. They are at rest on the ice. They push off each other and move in opposite directions. The female skater moves backwards with a speed of 3 m/s. Determine the post-impulse speed of the male skater.
A 50-gram tennis ball is loaded into a 2-kg homemade cannon. The cannon is at rest when it is ignited. Immediately after the impulse of the explosion, a photogate timer measures the cannon to recoil backwards a distance of 6 cm in 0. 02 seconds. Determine the post-explosion speed of the cannon and of the tennis ball (watch your units!!!)
Post-explosion speed of the cannon: _____________
Post-explosion speed of the tennis ball: ___________
The female skater moves backward at a speed of 3 m/s. The post-impulse speed of the male skater is 2.08m/s.
Momentum (linear) along, say, the x-axis is:
p=mv
so we have for the 2 skaters system:
[tex]p_before = p_after[/tex]
(45.0)+(65.0)= (45*3)+(65*v)
v= - 135/65= -2.08m/s
Speed in physics refers to how fast an object is moving. It is a scalar quantity that only takes into account the magnitude of the velocity of the object, not its direction. The speed of an object can be calculated by dividing the distance it travels by the time it takes to travel that distance. The SI unit of speed is meters per second (m/s), but other units such as miles per hour (mph) or kilometers per hour (km/h) can also be used.
Speed can be constant, meaning the object is moving at a steady rate, or it can be changing, meaning the object is accelerating or decelerating. Acceleration is the rate at which an object's speed changes over time, and it is typically measured in meters per second squared (m/s^2).
The concept of speed is fundamental to many areas of physics, including mechanics, thermodynamics, and electromagnetism. It is also a critical component of everyday life, influencing how we travel, communicate, and interact with the world around us.
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if the wires are of negligible diameter but are 2.8 mm apart, what is the magnetic field 10.0 cm from their midpoint, in their plane
According to the statement, The magnetic field 10.0 cm from their midpoint, in their plane is 0.028.
What is a magnetic field?The region around a magnet where the effects of magnetism are perceived is known as the magnetic field. To explain how the force of magnetism is distributed in the area around and inside something magnetic in nature, we use a magnetic field as a tool.
The magnetic field produced by these two current-carrying wires is simply the sum of the magnetic fields produced b each individually. Sin ce these current are antiparallel, their magnetic field partially cancel so that
Bnet = uI/2π ( 1/r1- 1/r2) = [(4π × 10^-7 m/A)(25.0 A)]/2π
=(1/0.10m - 0.0014m) - (1/0.10 + 0.0014m)
=1.4× 10^-6
in comparison, the earth's magnetic field is 0.5 × 10^-4 T so
Bnet/Bearth = 1.4× 10^-6 T/0.5 × 10^-4 T = 0.028
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The complete question is -
A long pair of insulated wires serves to conduct 25.0A of dc current to and from an instrument.
if the wires are of negligible diameter but are 2.8 mm apart, what is the magnetic field 10.0 cm from their midpoint, in their plane
how to convert 27 degrees c to f?
The temperature can be converted by first multiplying 27 by 9 over 5. Then, to get 80.6 degrees Fahrenheit, multiply 32 by 48.6.
The temperature scale known as the Fahrenheit scale was derived from one that physicist Daniel Gabriel Fahrenheit suggested in 1724. The unit is the degree Fahrenheit.
On the Celsius scale, one of the two temperature scales used in the International System of Units (the other being the Kelvin scale), the unit of temperature is the degree Celsius.
Fahrenheit was an early developer of the thermometer as we know it, thus he naturally needed to mark out different temperatures on them. He created the scale that is today known as Fahrenheit.
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how to convert 40celsius to fahrenheit?
40 degree Celsius in Fahrenheit is 104F. Fahrenheit and Celsius are related in that they are both units of temperature measurement.
To convert Celsius to Fahrenheit, you need to use the formula:
[tex]F = (9/5) * C + 32[/tex]
In this case, the formula would be:
[tex]Fahrenheit = (9/5) * 40 + 32[/tex]
Fahrenheit = 72 + 32
Fahrenheit = 104°F
Therefore, 40°C is equal to 104°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. Celsius, also known as centigrade, was developed by Swedish astronomer Anders Celsius in the mid 1700s. It is a scale based on 0 degrees as the freezing point of water and 100 degrees as the boiling point of water.
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when charged particles move through a conductor such as copper wire, what moves?
When charged particles move through a conductor such as copper wire, the electric charge moves. Specifically, the negatively charged electrons in the wire move in response to the electric field produced by the battery or other source of electrical energy.
As the electrons move, they collide with other atoms and transfer energy, causing a flow of charge through the wire. This flow of charge is called an electric current and is measured in amperes (A). In a direct current (DC) circuit, the electrons flow in one direction, while in an alternating current (AC) circuit, the electrons change direction periodically, producing a fluctuating current.
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what is baking soda ph
What is the uncertainty of pipe in c?
The uncertainty of a pipe in C refers to the level of imprecision or variability in the measured flow rate of fluid through the pipe.
Pipe uncertainty is affected by several factors, including the diameter and length of the pipe, the viscosity and density of the fluid, and the type of flow (e.g., laminar or turbulent).
To determine pipe uncertainty, it is necessary to consider the accuracy of the flow measurement equipment and the various sources of error that can occur during the measurement process. These may include factors such as temperature fluctuations, pressure changes, and variations in flow velocity.
Reducing pipe uncertainty requires careful attention to measurement techniques and equipment calibration, as well as an understanding of the factors that can affect flow rate. Proper monitoring and control of pipe uncertainty can help ensure accurate and consistent measurement of fluid flow, which is critical for many industrial and scientific applications.
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what is the maximum height at which a scaffold should be placed is 20 feet
The feet and meter are the units used to measure the length. Here the maximum height in meter at which a scaffold should be placed is 20 feet is 6.097 m.
What is feet?The feet is a standard unit of measurement. It is used to measure the length and distance of the objects. Feet is the plural alternative whereas the foot is the singular additive.
The metric system includes meters, centimeters, etc., whereas the imperial system includes foot, inches, yards, etc.,
Here 1 meter = 3.280 feet
So 20 feet = 6.097 m
Thus the maximum height in meter at which a scaffold should be placed is 20 feet is 6.097 m.
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OSHA regulations generally suggest the maximum height for a scaffold to be around 20 feet. This is to primarily ensure the workers' safety and to prevent accidents.
Explanation:The maximum height at which a scaffold should be placed is typically set by OSHA (Occupational Safety and Health Administration) regulations. In general, the maximum height for a scaffold is usually around 20 feet.
This setting ensures that workers utilize the scaffold appropriately at a safe height to prevent accidents, such as falls occurring from a height the humans are unprepared to handle. Worker Safety and adherence to the safety standards is the ultimate goal behind this regulation.
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Transcribed Image Text:9. You are holding two balloons of the same volume. One balloon contains 1.0 g helium. The other balloon contains neon. What is the mass of neon in the balloon? mol to c O2Smol 1.010 0.20 g b. 1.0 g 4.0 g d. 5.0 g e. 20. g a. Weod 0.25mol dog I mol с. 1
The mass of Neon in the ball is 5.18 grams when two balloons of the same volume where one contains 1.0 g helium and the other with Neon.
Given the mass of helium = 1g
The molar mass of helium (He) = 4g/mol
The mass of neon = m2
The molar mass of Neon (Ne) = 20.18 g/mol
Since the volume of two balloons is same, mass of the balloons depend on their molar masses respectively.
So, 1/4 = m2/20
m2 = 5.18g
Hence the mass of Neon in the balloon would be equal to 5.18g.
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what is the frequency of an electromagnetic wave that has the same wavelength as a 2.5 khz sound wave in water?
Answer: 120000 m
Explanation:
in electromagnetic wave, velocity is same as 3*10^8 m/s
therefore
λ = v/f
= c/f
= 3*10^8 / 2500 Hz
= 120000 m
what is the term for the flow of air in a north and south direction, which is caused by a difference in solar energy between the poles and the equator
The term for the flow of air in a north and south direction, caused by a difference in solar energy between the poles and the equator, is called the "Hadley cell circulation" or simply the "Hadley circulation."
What is Hadley circulation?The Hadley circulation is a large-scale atmospheric circulation pattern that occurs in the tropics.
It is driven by the unequal heating of the Earth's surface by the Sun, which creates a temperature gradient between the equator and the poles. Warm air near the equator rises, creating a low-pressure area, and then flows poleward at high altitudes.
As the air moves away from the equator, it cools and sinks back down to the surface near the subtropical regions, creating high-pressure areas. The air then returns to the equator at the surface, completing the circulation loop.
This north-south flow of air in the Hadley circulation helps to distribute heat and moisture from the tropics toward higher latitudes, playing a significant role in shaping global weather patterns. It influences the formation of trade winds, tropical rainforests, and desert regions.
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Find the equivalent resistance between points A and B in the drawing (R1 = 5.00 Ω, R2 = 7.00Ω)
The equivalent resistance between points A and B in the circuit is 9.844 Ω.
What is a resistor?A resistor is an electronic component designed to provide resistance to the flow of electric current in an electronic circuit. Resistors are passive components, meaning they do not amplify or switch the current, but instead they regulate the flow of current by impeding the flow of electrons.
To find the equivalent resistance between points A and B in the circuit, we can use a combination of series and parallel resistors.
First, we can combine resistors R1 and R2 in parallel to get an equivalent resistance:
1/R_eq = 1/R1 + 1/R2
1/R_eq = 1/5 + 1/7
1/R_eq = 0.4 + 0.1429
1/R_eq = 0.5429
R_eq = 1/0.5429
R_eq = 1.844 Ω (rounded to 3 decimal places)
The two resulting resistors, R3 and R_eq, are in series with each other, so we can add their resistances to get the total equivalent resistance:
R_total = R3 + R_eq
R_total = 8.00 Ω + 1.844 Ω
R_total = 9.844 Ω
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a glass of water left in the sun becomes warm. estella adds ice to the water to make it cool. what energy change occurs when ice is added to the warm drink?
A glass of water left in the sun becomes warm. Estella adds ice to the water to make it cool. The energy which change occurs when ice is added to the warm drink is the water loses heat to the ice, causing the ice to melt.
Melting, as the name suggests, is the process of changing a substance from a solid phase to a liquid phase. The melting process is endothermic, which means that heat energy must be absorbed for it to occur. This heat energy comes from an environment that has more energy and a higher temperature than the molten substance. Thermal energy can only be transferred through a temperature difference, which then causes a substance to melt (or at least increase its temperature) while the temperature of the surrounding medium decreases. Different substances have different melting temperatures (called melting points).
Causes of melting Ice in warm drink:
Ice melts in hot water due to the transfer of thermal energy from water to ice.
Heat flows from a hotter object to a cooler object until they reach thermal equilibrium, which means they are at the same temperature. In the case of melting ice in hot water, the water is hotter than the ice, so heat flows from the water to the ice, causing the ice to melt.
Most of us are familiar with the melting point of ice: 0 degrees Celsius or 32 degrees Fahrenheit. If the temperature of the ice is below this number, it will remain solid; if the temperature of the ice is raised above this number, the ice will become liquid water. If the ice is in contact with water, we know that the ice must be below 0 degrees Celsius and the water must be above 0 degrees Celsius. Due to the temperature difference, heat transfer occurs. The result would be a decrease in water temperature and an increase in ice temperature.
Complete Question:
A glass of water left in the sun becomes warm. Estella adds ice to the water to make it cool. What energy change occurs when ice is added to the warm drink?
answer choices
The water loses heat to the ice, causing the ice to melt.
The water absorbs the cold temperature from the ice.
Since the ice is cold, it adds cold to the environment.
The melting ice causes the water to expand, cooling it.
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Give another example of a topic or object that continually experiences potential and kinetic energy.
Answer:
Explanation:
A body that has speed and is positioned is above the ground has both kinetic and potential energy.
flying birda coiled springa man climbing hillWhat is the force constant of the spring which is 4cm by a mass of 200 g
The force constant of the spring would be 50 N/m.
What is spring?A spring is a deformable object whose linear length can be changed under the presence of force. It regains its original length after the force is removed.
When a spring is stretched by the length {x} due to an acting force {F}, then the following relation holds -
F = - kx
where {k} is spring constant.
Given is that a spring is stretched by 4cm by a mass of 200 g.
We know that -
F = - kx
|F| = |- kx|
200 = 4k
k = 50 N/m
Therefore, the force constant of the spring would be 50 N/m.
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mass is conserved in a reaction if the choose... of the initial reactant masses equals the choose... of the masses of choose...
Mass is conserved in a reaction if the of the initial reactant masses equals the of the masses of products
The law of conservation of mass is a fundamental principle in chemistry that states that the total mass of a closed system remains constant during a chemical reaction. This means that the mass of the reactants before a chemical reaction is equal to the mass of the products after the reaction.
The mass of the reactants before the reaction is equal to the mass of the products after the reaction. This confirms that the law of conservation of mass holds true for this chemical reaction.
This principle is essential in chemistry as it allows us to make predictions about the outcome of a reaction based on the starting materials. It also helps to ensure the accuracy of experimental measurements, as any discrepancy between the expected and observed masses can indicate an error in the experiment.
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True or False? instantaneous velocity can be positive, negative, or zero.
True, instantaneous velocity can be positive, negative, or zero.
What is instantaneous velocity?
Instantaneous velocity is the velocity of an object at a specific moment in time. It can be positive if the object is moving in a positive direction, negative if the object is moving in a negative direction, or zero if the object is not moving at all
Velocity is a measure of how fast an object is moving and in what direction. Instantaneous velocity, as the name suggests, refers to the velocity of an object at a specific instant in time. It is calculated by finding the derivative of the object's displacement with respect to time.
When an object is moving in a positive direction, its instantaneous velocity will be positive. For example, if a car is moving forward on a straight road, its velocity is positive. Similarly, when an object is moving in a negative direction, its instantaneous velocity will be negative. For example, if the same car is moving backward on the same road, its velocity is negative. Finally, if an object is not moving at all, its instantaneous velocity is zero.
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