A rock is dropped from a bridge to the water below. It takes 3.2 s for the rock to hit the water. Find the speed (in m/s) of the rock as it hits the water. How high (in m) is the bridge above the water

The Money Multiplier is found by the formula (1/Required Reserve Ratio). What is the value of the multiplier if the Required Reserve Ratio is 65%? A. 1.54 B. 1.65 C. 1.99

Which statement is true if the refractive index of medium A is greater than that of medium B? A. Total internal reflection is possible when light travels from air to medium B to medium A. B.

You are trying to find the impulse of an object through experimentation

Supriya has a pre-paid electricity connection at home. On a sultry Sunday afternoon, she checks that she only has ₹9 left in the balance. She wants to use the air conditioner (AC), rated at 1.2 kW. The price of electricity is ₹10 / unit in her area.

Two boxes hang from a solid disk pulley that is free to rotate as the blocks rise/fall. The left box has a mass m1 = 4.3 kg and the right box has a mass m2 = 2.1 kg. The pulley has mass m3 = 2.5 kg and radius R = 0.15 m.

Why is friction between moving parts of machines undesirable?

What holds down earths atmosphere in its place?

A person catches a ball with a mass of 145 g dropped from a height of 60.0 m above his glove. His hand stops the ball in 0.0100 s. What is the force exerted by his glove on the ball? Assume the ball slows down with constant acceleration.

State the law of conservation of energy in your own ords

The malfunction indicator light in an OBD II system is flashing. Technician A says that this simply indicates a soft failure. Technician B says this means the problem could be damaging the catalytic converter. Who is right? A. Technician A only B.