Lightning bolts occur when negative charges in clouds:

A. Flow positively to the ground

B. Flows negatively to the ground

C. Flows to the negatively charged clouds

D. cause thunder to sound

A football is kicked 18m/s at 20 degrees. what is the acceleration rate in the horizontal direction

How does activity on the Sun affect human technology on Earth and in the rest of the solar system?

When an object oscillating in simple harmonic motion is at its maximum displacement from the equilibrium position, which of the following is true of the values of its speed and the magnitude of the restoring force?

How would you measure the volume of a sponge

Describe how particles that make up an object change when the objects temperature increases

If a 1.50 kg mass revolves at the end of a string 0.50 m long, and its tangential speed is 6.0 m/s, calculate the centripetal force.

Balanced forces can change an object's direction. A. True B. False

The state of matter that has particles that slide by one another

Temperature is usually measured in degrees with a (n)

Two lab carts are pushed together with a spring mechanism compressed between them. Upon release, the 5.0 kg cart repels one way with a velocity of 0.12 m/s. The 2.0 kg cart goes the other way. At what velocity does it travel?