Physics 151 Exam 2 Review

Front

A rotating object must have a nonzero net torque acting on it.

Back

False

Front

A constant net torque is applied to an object. Which one of the following will not remain constant?
Angular Velocity,
Angular Acceleration,
Center of Gravity,
Moment of Inertia

Back

Angular Velocity

Front

What would happen to pressure if volume increased, and other variables are held constant? (PV = nRT)

Back

Pressure decreases

Front

On a warm summer day, in which direction would air flow if one were to open the window to their air-conditioned house?

Back

The air rushes inside

Front

Two people ride a merry-go-around rotating at a constant angular speed. Person A stands on the outer rim while Person B stands halfway between the middle and outer rim. How do their tangential speeds compare?

Back

Person A has a larger Tangential speed

Front

During a head-on collision between a large truck and a car, the force on the car is...

Back

The same

Front

Kinetic energy is associated with _____ and potential energy is associated with _____.

Back

Motion, Position

Front

A poker is a stiff, nonflammable rod used to push burning logs around in a fireplace. For safety reasons, the poker should be made from a material with a...

Back

High Specific Heat

Front

An object of mass m moves to the right with a speed v. It collides head-on with an object of mass 2m moving with speed v/2 in the opposite direction. If the two objects stick together, what is the combined object's speed after the collision?

Back

0

Front

When the buoyant force acting on an object is less than its weight it will...

Back

Sink