The source of energy for all plants

A ballet dancer spins with 2.4 rev/s with her arms outstretched, when the moment of inertia about axis of rotation is 1. With her arms folded, the moment of inertia about the same axis becomes 0.61. calculate the new rate of spin.

In what direction must a force be applied so that the forces on the 1 kg object are balanced

This type of stretching activities are held for 10-20 seconds to maintain your current level of flexibility. dynamic ballistic static

What is the average useful power output (in W) of a person who does 6.60 ✕ 106 J of useful work in 8.40 h?

Consider a rectangular ice floe 5.00 m high, 4.00 m long, and 3.00 m wide. a) What percentage of the ice floe is below the water line if it floats in sea water?

A net force of 30 N is applied to an object with a mass of 15 kg. The object accelerates at 2 m/s2. If half the force is applied, what happens to the acceleration?

A 770 n man stands in the middle of a frozen pond of radius 10.0 m. he is unable to get to the other side because of a lack of friction between his shoes and the ice. to overcome this difficulty, he throws his 1.

Which equation represents the total energy of a system?

The weight of a 100 N laser printer is spread over 0.5m2. What is the pressure it exerts? A) 50 N/m2 B) 200 N/m2 C) 500 N/m2

Comparing and contrasting ionic and covalent bonds?