Which is a good example of a contact force?

protons in the nucleus of an atom

a ball falling down after it's thrown up into the air

a satellite orbiting Earth

a bat hitting a ball

List five objects that produce waves with a large amplitude and five that produce waves with a small amplitude.

A doctor estimates that a particular patient is losing bone density at a rate of 3% annually. The patient currently has a bone density of 1,500 kg/mg3. The doctor writes an exponential function to represent the situation.

Sally travels by car from one city to another. She drives for 30 min at 80 km/hr, 12 min at 105 km/hr, and 45 min at 40 km/hr, and she spends 15 min eating lunch and buying gas. A. Determine the average speed for the trip. B.

A running back with a mass of 70 kg travels down the field with a velocity of 5.0 m s. Calculate the kinetic energy of the football player.

What is the definition of Thermohalaine circulation

For a cars speedometer what is the calculated speed over an entire trip

How does gravity influence our annual calendar?

A 0.500 kg block is sitting on a horizontal, frictionless surface. The block is connected to a horizontal spring with a force constant of 124 N/m. The other end of the horizontal spring rests against a wall. When a 100.

The velocity of waves in a ripple tank of a particular depth of water is 20 centimeters per second, and standing waves are produced with nodes spaced 2.0 centimeters apart. what is the frequency of the wave generator?

If a wave is generated in a Slinky and the wave hits a wall, the reflected wave will be