The fossil record suggests that the first animals to evolve lived

A.) in the air

B.) in swamps

C.) on land

D.) in the sea

Assume 10,000 electrons were transferred from your hair to the balloon. a. What is the charge in Coulombs on the balloon? b. What is the charge in Coulombs on your hair? c.

What is atherosclerosis? What is the result of atherosclerosis?

Name the parts of an atom and their corresponding charge

What does an unconformity in a sequence of rock layers reveal about geologic history? A. A rock layer must have turned upside down. B. A layer of rock might have eroded. C. The layers must cover hundreds of square miles. D.

If a 79.6 kg dancer stands on one toe, what is the magnitude of pressure exerted on that toe to support his weight? (Magnitude only! No negative numbers) *Assume that tip of the dancer's toe has a radius of 0.02 m and has a circular area of contact.

Describe a skydivers jump from the airplane to the ground

This is a unit of electrical resistance

If a tennis ball has a velocity of 18 m/s and a momentum of 1.06 kg • m/s, what is the mass of the tennis ball in grams?

Why does it rain so hard?

Three liquids are at temperatures of 5 ◦C, 25◦C, and 34◦C, respectively. Equal masses of the first two liquids are mixed, and the equilibrium temperature is 17◦C.