1.name and describe two types of mechanical weathering.
2.list and describe two ways that scientists can date fossils found in the earth.

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.

Relative to the ground below, how many joules of potential energy does a 1000-kg boulder have at the top of a 5-m ledge?

Suppose you hit your hand against the edge of table. using newton’s third law of motion why does my hand hurt? explain