The pressure of water on the ground floor in a building is 50000 pa, and at the first floor it is 20000 pa. Taking the density of water as 1000 kgm-3, find the height of the first floor

During a football game, a receiver has just caught a pass and is standing still. Before he can move, a tackler, running at a velocity of 2.60 m/s, grabs and holds onto him so that they move off together with a velocity of 1.30 m/s.

Find the lengths of each of the following vectors (a) 2i + 4j + 3k (b) 5i - 2j + k (c) 2i - k (d) 5i (e) 3i - 2j - k (f) i + j + k

Are there classes of inclined planes?

Using 15 percent as machine energy efficiency, what is the actual work output if the total work input is 7500 kilojoules ? A. 500 kilojoules B. 750 kilojoules C. 1,125 kilojoules D. 7,500 kilojoules

If a free falling rock were equipped with a speedometer, by how much would it's speed readings increase with each second IF it were on a planet where g = 20 m/s^2? would it be 60?

Why is raw sewage a major pollutant in some countries but not in developed countries?

What is the momentum of a 2 kg ball traveling at 2m/s

A constant force is exerted for a short distance on a block of mass that is initially at rest on a horizontal frictionless plane. This force gives the block a certain final speed v.

A football quarterback is moving straight backward at a speed of 3.00 m/s when he throws a pass to a player 20.0 m straight downfield. (a) if the ball is thrown at an angle of 25.

Simone is walking her dog on a leash. The dog is pulling with force of 34 N to the right and simone is pulling backward with a force of 16 N