A skier is gliding down a slope at a constant speed. what energy transformation is taking place?
1 answer:
In this process, gravitational potential energy is converting into heat/thermal energy.
In fact, the skier starts at a certain height h, so it has gravitational potential energy equal to
as he slides down, he loses this energy. However, the problem says that the speed of the skier remains constant during the motion, so this energy is not converting into kinetic energy, which remains constant. The only possibility is that a frictional force between the skier and the ice is acting on the skier. When the friction acts, the energy of the skier is converted into motion of the molecules of the ice, heating it, so into thermal energy.
In fact, the skier starts at a certain height h, so it has gravitational potential energy equal to
as he slides down, he loses this energy. However, the problem says that the speed of the skier remains constant during the motion, so this energy is not converting into kinetic energy, which remains constant. The only possibility is that a frictional force between the skier and the ice is acting on the skier. When the friction acts, the energy of the skier is converted into motion of the molecules of the ice, heating it, so into thermal energy.
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Answer:
The length of an edge of each small cube is 3.43 nm.
Explanation:
Given that,
Temperature of ideal gas =27.0°C
Pressure = 1.00 atm
We need to calculate the length of an edge of each small cube
Using gas equation
For, N = 1
Where,
N = number of molecule
k = Boltzmann constant
T = temperature
P= pressure
Put the value into the formula
Now, for the cube
Hence, The length of an edge of each small cube is 3.43 nm.