Which one of the following frequencies of a wave in the air can be heard as an audible sound by the human ear?

A. 1,000 Hz

B. 100,000 Hz

C. 0.10 Hz

D. 10 Hz

Which steps are involved in desalination of water? Check all that apply

Object a and object b are both in motion when they collide with each other. They then continue in a new direction unaffected by any other force this is a

Why is chemistry important to physical science?

Calculate the efficiency of a fossil-fuel power plant that consumes 380 metric tons of coal each hour to produce useful work at the rate of 720 MW. The heat of combustion of coal (the heat due to burning it) is 28 MJ/kg.

What type of galaxy is M82 based on its appearance in the visible-light view? A) elliptical B) spiral C) irregular Part

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.