The smallest organisms found on Earth are on the order of what unit of size?1. picometers 2. nanometers 3. micrometers 4. millimeters.

Which of the following describes groundwater? Groundwater is a renewable resource. Groundwater flows quickly. Groundwater exists only in regions that get a lot of rain. Groundwater does not exist during dry periods.

An orange is placed on a table in a completely dark room, without any source of light. Which of the following choices correctly describes what an observer will see as he looks in the direction of the orange?

The atmosphere of Neptune and Uranus have a blue color because of which gas?

Which of these is true about acceleration?

How are acceleration and velocity related

given that a car's distance from a stop sign t seconds since it started moving is represented by d=t2-2t determine the car's average speed over each interval of elapsed time

A ball hits a wall. What is true about the magnitude of the force experienced by the ball compared with the force experienced by the wall? OA. The ball experiences more force than the wall. OB. The ball experiences less force than the wall.

A swimmer jumps from a waterfall thats is 8.5 m high from the lake below. How fast must he run horizontally to dive 2.5m away from the base of the waterfall?

What happens (as far as energy goes) when a molecule of gas strikes the wall of a container?

The boom of a fire truck raises a fireman (and his equipment - total weight 280 lbf) 60 ft into the air to fight a building fire.