A person gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. The cart travels for
ward along the floor, gradually slowing as it moves. Consider the horizontal force(s) on the cart while it is moving forward and slowing. Which of the following statements is correct? Question 36 options:
Both a forward and a backward force are acting on the cart, but the forward force is larger.
Only a forward force is acting which diminishes with time.
Both a forward and a backward force are acting on the cart, but the backward force is larger.
Only a backward force is acting, no forward force.
The increase in thermal energy results in an increase in pressure.
Explanation:
The increase in entropy is directly related to the increase in temperature. So the thermal energy in heat engine increases the temperature of that surrounding.
Higher temperature means the kinetic energy of particles is also higher, their vibration is increasing. So it increases the pressure (ideal gas law).
In this way the increment in the thermal energy in heat engine moves piston by increasing the pressure.
