What is gravity in earth.

A man is running through the park at a speed of 6.8 m/s away from a police car that is traveling 23.8 m/s in the opposite direction. The siren has a frequency of 1,675 Hz. What will be the frequency of the pitch heard by the runner?

How do you convert pounds into newtons?

What is the year in which j. J. Thomson discovered the electron?

How many complete wavelengths are present in the sound wave shown? 1 2 3 4 5 6

Explain the difference between mass and weight (in at least 2 sentences)

A 500kg elevator is raised to a height of 10 m in 10 seconds. Calculate the power of the motor. 490 W 49,000 W 4900 W 490,000 W

Which one of newton's laws does a doll riding a dog represent

Archimedes tells us the lifting power of a balloon (how much mass it can lift) is equal to the difference between the mass of the balloon and the mass of the air it displaces.

What are the parts of a pendulum? Describe each part.

Why do space suits need to be pressurized?