Andrea was watching her brother in the ocean and noticed that the waves were coming into the beach at a frequency of 0.777778 Hz. How many waves hit the beach in 27 s? Answer in units of waves.

What happens when you rub an ebonite stick with a wool cloth?

A roller coaster track is 3,000 meters long. It takes 100 seconds to travel once around the roller coaster. Is the velocity constant throughout the trip? Explain.

The body can get water from milk juice and vegetables

A cable applies a vertical force to a crate with a mass of 70.0 kg. It first lifts the crate to a height of 12.0 m above the floor, and then lowers it back to the floor. What is the total work done by the force?

When air is blown across the top of an open water bottle, air molecules in the bottle vibrate at a particular frequency and sound is produced. This phenomenon is called (1) diffraction (3) resonance (2) refraction (4) the Doppler effect

Is it possible for a baseball to have as large a momentum as a much more massive bowling ball

A simple pendulum with length 1.6 m and mass 21 kg is pulled 20◦ from the vertical and released. If it is allowed to swing until it comes to rest, how much energy was converted into heat? The acceleration of gravity is 9.8 m/s 2.

A pulley system has an MA of 4. How much force would be necessary to pull a 200 newton box

0.005098 in megaliters to liters

The active sections that are located along fault lines are called A. seismic gaps. B. seismic risks. C. stress accumulations. D. recurrence gaps