A 4 watt night light is left on for 8 hours each night how much work does it do per night

what would happen if we were to put solid balls of the same shape and size, but made of different materials, in the column of liquid?

You are riding in a hot air balloon that, relative to the ground, has a velocity of 6.0 m/s due east. You see a hawk moving directly away from the balloon with a velocity relative to you of 2.0 m/s due north.

1000 Kg car approaches an intersection traveling north at 20 m/s. A 1150 Kg car approaches the same intersection traveling east at 33 m/s. The two cars collide at the intersection and lock together.

Which process will double the power dissipated by a resistor?

A ramp is 2.8 m long and 1.2 m high. How much power is needed to push a box up the ramp in 4.6 s with a force of 96 N?

What are the requirements of a practical fuel

A woman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. The book has a mass of m = 1.7 kg and the coefficient of static friction between her hand and the book is μs = 0.52.

Tony has a mass of 50 kg, and his friend Sam has a mass of 45 kg. Assume that both friends push off on their rollerblades with the same force. Explain which boy will have greater acceleration.

Which part of your ear do sound waves enter through?

Why do scientist use different types of models to represent compounds