What is one characteristic of a sample of matter that indicates it is a pure substance?

A guitar string is plucked and set into vibration. The vibrating string disturbs the surrounding air, resulting in a sound wave.

How can pwc operators minimize annoying noise?

A hockey puck wont slide very far on concrete or asphalt, but it will slide for a very long time on ice. Why is this?

If samples of silver and lead each had volumes to 1 cm^3 which sample would have the greater mass and what would the difference in the mass be

An AC generator spins a magnet inside a loop of wire to generate an induced current. Which of the following changes would cause the amount of induced current to increase? Group of answer choices a) None of these would increase the induced current.

An ant is crawling along a straight wire, which we shall call the x axis, from A to B to C to D

How does a very heavy object resist sliding sideways when you push hard on it?

A go-cart traveled at 200 meters in 18 seconds. what was the average speed of the go cart?

A cartoon plane with four engines can accelerate at 8.9 meters per second squared

Convert 1087 ft/s to mi/hr