Test - Thermal Energy/ Work and Power Flashcards
1
Q
A constant force of 2.0 N is used to push a 3.0 kg box 4.0 m across the floor. How much work is done?
A
8 J
2
Q
When you hold an ice cube, your hand feels cold because
A
heat flows from your hand to the ice cube
3
Q
The rate at which work is done is ____.
A
Power
4
Q
A medicine ball has 10 J of energy and is thrown upward with a velocity of 2 m/s. What is its mass?
A
5 kg
5
Q
When oil is burned to produce electricity, the electrical energy produced is less than the potential energy in the oil. Which best explains this observation?
A
Some of the potential energy in oil is converted into forms of energy other than electricity
