How can biologic weathering result in chemical weathering?

A. Bacteria release acids and other agents that break down rock

B. Large herds temple rocks and break up soil

C. Root loosen soil and break rock

A small steel ball rolls counterclockwise around the inside of a 30.0 cm diameter roulette wheel. The ball completes exactly 2 revolutions in 1.20 seconds. What is the ball's angular displacement after 1.

If a fully loaded shopping cart has a head-on collision with an empty cart both moving at the same speed toward each other, which cart experiences the greater force? The greater impulse? The greater change in momentum? The greater acceleration?

What is the function of a lighting conductor?

A tennis ball connected to a string is spun around in a vertical, circular path at a uniform speed. The ball has a mass m = 0.16 kg and moves at v = 5.33 m/s. The circular path has a radius of R = 1.13 m.

A runner covers the last straigjt stretch of a race in 4 s. during that time, he speeds up from 5m/s to 9m/s.

Which safety measures should you follow during a thunderstorm? Check all that apply. (A) Avoid touching anything that conducts electricity. (B) Avoid touching a person who has been struck by lightning. (C) Go outside.

1. An automobile with a mass of 1000 kg accelerates when the traffic light turns green. If the net force on the car is 4000 N, what is the car's acceleration?

Imagine that you replace the block in the video with a happy or sad ball identical to the one used as a pendulum, so that the sad ball strikes a sad ball and the happy ball strikes a happy ball.

Under what conditions will an object experience a gravitational force? Under what conditions will an object experience an electric force? Under what conditions will an object experience a magnetic force?

A basketball player pushes down with a force of 34 N on a basketball that is inflated to a gauge pressure of 9 x 104 Pa. What is the diameter of contact between the ball! and the floor?