a body whose mass is 40kg runs up a flight of 30steps, each 150mm high in 6 seconds. Find the average power developed

Where does fusion regularly occur and what kind of energy is produced

In the interaction between a hammer and the nail it hits, is a force exerted on the nail? On the hammer? How many forces occur in this interaction?

A ball initially at rest rolls down a hill and has an acceleration of 3.3 m/s2. if it accelerates for 7.5 s, how far will it move during this time?

A person who works in only area of a subject is a

If the mass of the counterweight increases by adding more mass, how does the force required to lift the counterweight change?

A cell provides 6 V to an LDR. The current through this LDR is measured and is found to be 3 A. What is the resistance of the LDR?

A car travels along eastward with a constant velocity. the magnitude of the acceleration of the car is

What is the weight of a 65 kg astronaut on mars?

When lava cools, what type of Rock forms?

A uniformly charged conducting sphere of 1.1 m diameter has a surface charge density of 6.2 µC/m2. (a) Find the net charge on the sphere. (b) What is the total electric flux leaving the surface of the sphere?