If the period of a wave is 0.05 s, then what is its frequency?

A motorcycle at a stoplight takes 4.22 seconds to accelerate to 28.0 m/s after the light turns green. What is its average acceleration?

A machine performs 90 J of work in lifting an object. It requires 120 J of work do lift it. How much heat is created by the machine?

Which type of energy makes up most of the internal energy of a solid substance? A. Kinetic energy from translation B. Kinetic energy from rotation C. Kinetic energy from vibration D. Potential energy from intermolecular forces

Name 8 examples of Convection.

Which describes how electromagnetic waves travel a. They can only travel through a medium. b. They can travel through a vacuum but not through matter. c. They can travel through matter and through a vacuum. d. They can only travel through matter.

A man paddles a canoe in a long, straight section of a river. The canoe moves downstream with constant speed 5 m/s relative to the water. The river has a steady current of 1 m/s relative to the bank. The man's hat falls into the river.

In an atom, almost all of the mass is concentrated in a tiny nucleus because

A truck travels down the highway at a speed of 110 km/hr. How long does the trip last if the truck covered 2200km?

Could tests be performed to support the clamim?

A carpenter is working on a house two blocks away. you notice a slight delay between seeing the carpenter's hammer hit the nail and hearing the blow. at what time does the event "hammer hits nail" occur?