Physics Spring Semester Review - 24

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?

• 6 J
• 8 J
• 12 J
• 24 J

The rate at which work is done is ____.

• power
• force
• efficiency
• momentum

The power expended doing 100 J of work in 50 s is

• 1/2 Watts
• 2 Watts
• 4 Watts
• 50 Watts

If you place a pipe over the end of a wrench when trying to rotate a stubborn bolt, effectively making the wrench handle twice as long, you'll multiply the torque by ____.

• two
• four
• eight

Compared with a force, a torque involves ____.

• rotation
• leverage
• distance from an axis of rotation
• all of these

The sum of kinetic and potential energy of the particles in an object is ______.

• temperature
• thermal energy
• heat

The measure of the average kinetic energy of particles in an object is ______.

• temperature
• thermal energy
• heat

Which temperature scale is based on absolute zero?

• Kelvin
• Celcius
• Fahrenheit

The first law of thermodynamics is restatement of what law?

• Law of Conservation of mass
• Law of Conservation of momentum
• Law of conservation of energy

Waves transfer ____.

• energy
• matter
• gravity
• force