If input work is equal to output then its efficiency will be?

If the solid, liquid, and gas have the same mass of 24 g, then what would the volume of the solid, liquid, or gas be greater? Explain

Calculate the momentum for a 50kg cart traveling at 15m/s?

A 200 g piece of iron is heated to 100°C. It is then dropped into water to bring its temperature down to 22°C. What is the amount of heat transferred to water? (ciron = 0.444 J/g°C)

A block of mass m=1.2 kg is held at rest against a spring with a force constant k=730N/m. Initially the spring is compressed a distance d.

If the engine receives 6.45 kJ of heat energy from the reservoir at 520 K in each cycle, how many joules per cycle does it reject to the reservoir at 300 K?

How long did the astronauts stay on the moon?

Brenda is standing on the beach; the sea is choppy. she observes that the crests of distant waves appear not only smaller, but also closer together than do the crests of waves nearer the beach. this example illustrates a depth cue known as:

If two waves in the same space interfere completely destructively, which of the following occurs? A. The amplitude decreases. B. The amplitude increases. C. The wave speed increases. D. The wave speed decreases.

An electric force exists between which pair of objects? Check all that apply. A) a neutral object and a negative object two negative objects B) a neutral object and a positive object C) two positive objects D) a negative object and a positive object

A person jogs 40 km in 32 minutes then 20 km in 22 minutes and finally 10 km in 16 minutes what is his average speed in in per minute