When an object experiences centripetal acceleration, in which direction does

it accelerate?

Waves that do not require a medium through which to travel are called ...

what is the difference between stirring hot soup with a wooden spoon and a metal spoon? what physical property is being observed?

Which system protects us from radiation and the vacuum of space? a. geosphere b. hydrosphere c. atmosphere d. biosphere

A person drives to the top of a mountain. On the way up, the person's ears fail to pop, or equalize the pressure of the inner ear with the outside atmosphere. The pressure of the atmosphere drops from 1.

What is an example of density

How does sound travel from your vocal cords to someone's ear?

Select all the correct answers. Copper is listed in the 29th position in the periodic table. It's used for conducting electricity. What is copper? a metal a metalloid a nonmetal a noble gas an element

Neutron stars are smaller in size than less massive white dwarfs. a. True b. False

A lightning bolt carrying 30,000 A lasts for 50 micro-seconds. If the lightning strikes an airplane flying at 20,000 feet, what is the charge deposited on the plane?

David walks 3 km north, and then turns east and walks 4 km