a 500 kg car is accelerated from rest by a force of 2000 N for a displacement of 400m. what is the speed of the car at the end of 400 M?

A ball rolls around a circular track with an angular velocity of 4π rad/s. what is the period of the motion

When a guitar string is plucked and the wooden guitar vibrates at the same pitch as the string, this is called a refraction b diffraction c resonance d constructive interference

How does the direction of vibration of a longitudinal wave compare to its direction of motion?

If Mr. Kirwan's pet Fluffy the Wonder Hamster rides his unicycle at a rate of 5m/s to the north on a flatbed train car. Under what conditions do you see him moving at 5 m/s?

1. What does it mean when gravity is called an "attractive force"?

Multiple sound waves reflections in a room are called?

A shopping mall has a length of 200 m and a width of 75 m. What is the area of the mall?

Which scientist proposed the idea of a sun-centered solar system instead of an earth-centered solar system?

Once an object is in focus at medium power, what is the next step?

According to the concept of length contraction, what happens to the length of an object as it approaches the speed of light and then slows down, eventually coming to a stop? It is always observed as contracting.