Which of these is a contact force?

A. earth's attraction of the moon

B. force of a magnet that attracts paper clips

C. force of a bat on a baseball

A small ball of mass 2.00 kilograms is moving at a velocity 1.50 meters/second. It hits a larger, stationary ball of mass 5.00 kilograms. What is the kinetic energy of the system after the collision if the collision is elastic?

A fishing boat accidentally spills 3.0 barrels of diesel oil into the ocean. each barrel contains 42 gallons. if the oil film on the ocean is 2.5 * 102 nm thick, how many square meters will the oil slick cover?

Which sphere of Earth is associated with plate tectonics? A. atmosphere B. biosphere C. hydrosphere D. lithosphere

Which of the following is NOT a way that machines provide a mechanical advantage? a. Change direction b. Change distance c. Change power d. Chance force

For every action there is an equal and opposite reaction, which law is that

A scientist has been tracking and studying a population of deer in Yellowstone National Park. He surveys the population every six months. Usually, the population is thriving and has a gene pool with a wide variety of traits.

How long will it take a bike traveling at 5 meters per second to travel 25 meters south? A. 5 s B. 0.2 s C. 5 s south D. 0.2 s south

Two masses are connected by a string which passes over a pulley with negligible mass and friction. One mass hangs vertically and one mass slides on a frictionless 30.0-degree incline. The vertically hanging mass is 6.

The coordinates 40 degrees north and 100 degrees east falls in what country?

Which type of radio waves have the highest frequency and are used in radar detection? microwaves x-rays waves infrared waves gamma waves