True or false

Lightning happens because of the release of static electricity.

This is the angle at which light leaves or bounces off of a surface relative to the normal

A sound wave with amplitude xo is measured by an observer to have an intensity of I0 when the observer is standing 4.0 meters from the source.

How your body is cooled when you perspire

If a car increases its speed from 20 mph to 60 mph, by what factor does the kinetic energy of the car increase

What are compounds made of

This is a bond in which a single pair of electrons is shared between a pair of atoms

How many phase changes does ice undergo when it changes to water vapor in the water cycle?

You have a horizontal grindstone (a disk) that is 85 kg, has a 0.31 m radius, is turning at 88 rpm (in the positive direction), and you press a steel axe against the edge with a force of 21 N in the radial direction.

Which equation is most likely used to determine the acceleration from a velocity vs. time graph?

Applied force is the force of support exerted by an object that holds up another object. True False