A 4-kilogram cat is resting on top of a bookshelf that is 3 meters high. What is the cat's gravitational potential energy relative to the floor if the acceleration due to gravity is 9.8 m/s2?

29J

or

118J

118J

A small 20-kilogram canoe is floating downriver at at speed of 2 m/s. What is the canoe's kinetic energy?

22J

or

40J

40J

An object's gravitational potential energy is NOT directly related to which of the following?

Its mass

or

Its speed

Its speed

The kinetic energy of the pendulum bob in Figure 15-1 increases the most between locations...

B and D

or

A and C

A and C

If no friction acts on a diver during a dive, then which of the following statements is true?

(KE + PE) beginning = (KE + PE) end

or

The total mechanical energy of the system increases

(KE + PE) beginning = (KE + PE) end

Nuclear power plants are designed to convert nuclear energy into what type of energy?

chemical

or

electrical

electrical

Solar cells convert what type of energy

into electrical energy?

electromagnetic

or

nuclear

electromagnetic

The energy of MOTION is called...

work

or

kinetic energy

Kinetic energy

The energy stored in gasoline is...

mechanical energy

or

chemical energy

Chemical energy

The gravitational potential energy of an object

is always measured relative to the...

surface of the earth

or

reference level from which the height is measured

reference level from which the height is measured

The mechanical energy of an object equals its

kinetic energy plus its potential energy

or

chemical energy plus its nuclear energy

kinetic energy plus its potential energy

The total potential and kinetic energy of all the microsopic particles in an object make up its...

thermal energy

or

chemical energy

thermal energy

Which of the following increases when an object

becomes warmer?

thermal energy

or

nuclear energy

thermal energy

As the temperature of an object rises, so does the

thermal energy of the object

or

kinetic energy of the object

thermal energy of the object

Heat is the transfer of thermal energy from one object to another because of a difference in...

specific heat

or

temperature

temperature

Thermal energy depends on an object's...

temperature

mass

phase (sold, liquid, or gas)

all of the above

All of the above

What property of an object is related to the average kinetic energy of the particles in that object?

temperature

or

specific heat

temperature

Which of the following is a unit of temperature?

celsius degree

or

calorie

celsius degree