A 6.67 kg bowling ball moves at 4.65 m/s. How fast must a 2.6 g Ping-Pong ball move
so that the two balls have the same kinetic
energy?
1. 230.618
2. 108.275
3. 189.271
4. 254.173
5. 72.0752
6. 66.6409
7. 77.6273
8. 165.561
9. 235.521
10. 145.685
Answer in units of m/s.

How is the gravitational force related to the distance between two objects?

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.