1. When you are on a rotating platform holding a spinning bicycle wheel, what is the total angular momentum of the system (you and the bicycle wheel) when you are not moving (before the wheel is turned on it side)?

A. less than zero (negative)

B. zero

C. greater than zero

2. When you are on a rotating platform holding a spinning bicycle wheel, what is the total angular momentum of the system (you and the bicycle wheel) when you turn the bicycle wheel on its side and you start rotating?

A. less than zero (negative)

B. zero

C. greater than zero

3. Angular Momentum is the multiplication of ______ and it is ______

options for the first blank:

Angular Velocity and the distance from the axis ofrotation

Angular Inertia andAngular Velocity

Mass and Angular Inertia

Second blank:

Always Zero

Always conserved

Always greater than zero

3. If the Angular Momentum is Conserved, it means that (check all that apply)

A..When the Rotational Inertia increases the Rotational Velocity must decrease

B. When the Rotational Velocity increases the Rotational Inertia must increase

C. If the total Angular Momentum of a system is zero initially, it will always remain zero unless some external force acts on it.

D. When the Rotational Inertia increases, the Rotational Velocity must increase

E. When the Rotational Velocity increases the Rotational Inertia must decrease

4. What is the frequency of a pendulum with a period of 1/2 second?

A. 4 hertz

B. 1/4 hertz

C. 1/2 hertz

D. 2 hertz

5. If the speed of sound on air is about 340 m/s, and you hear a thunder 9 s after you see it, how far away is the storm?

A. About 0.3 Km away

B. About 3 Km away

C. About 1 km away

D. About 2 km away

E. About 9 km away

6. What is the intensity/amplitude ratio difference between sound waves from a whisper at 30 dB, and sound waves from a busy street at 60 dB?

A. 100

B. 10

C. 100000

D. 1000000

E. 1000