Sound waves are a type of mechanical wave and can therefore travel through space because they do not require a medium.

True

False

Clear glass, water, and air are examples of what kind of material

The current in a hair dryer measures 13 amps. The resistance of the hair dryer is 11 ohms. What is the voltage?

Why is carbon added to iron

A box is given a push so that it slides across the floor. how far will it go given that the How far will it go, given that the coefficient of kinetic friction is 0.13 and the push imparts an initial speed of 3.5 m/s

An object is thrown horizontally off a cliff with an initial velocity of 5.0 meters per second. the object strikes the ground 3 seconds later. what is the horizontal speed of the object 1.0 second after it is released

What is the momentum of a 15 kg tire rolling down a hill at 3 m/s? 5 kg • m/s 18 kg • m/s 45 kg • m/s 60 kg • m/s

Which of Newton's laws, when combined algebraically with his law of universal gravitation, can be used to calculate Earth's mass? A) first B) second C) third

Why does a balloon filled with helium rise while a balloon filled with an equal volume of average atmospheric air does not? A. Helium has no mass, but air does. B. Helium increases the balloon's mass more than air. C.

Consider the following controls in an automobile in motion : gas pedal, brake, steering wheel. what are the controls in this list that cause an acceleration of the car?

What material are oil pipelines made from?