Total energy input is 1400 and my efficiency is 80% so what is the useful energy output in jules?

A force of 30n is applied to a screwdriver to pry the lid off of a can of paint. The screwdriver applies 75n of force to the lid. What is the mechanical advantage of the screwdriver

Which number should be placed in the blank to make the equation balanced Xe+___F2=XeF2?

A 1000-kg car is moving along a straight road down a 30∘ slope at a constant speed of 20.0m/s. What is the net force acting on the car?

The first satellite placed in orbit was? A. Explorer 1 B. Salyut 1 C. Sputnik 1 D. Sky Lab

Clouds absorb outgoing radiation emitted by Earth and retaliate a portion of it back to the surface during ... A. Nighttime B. Daytime C. Summer D. A times of heavy rain fall

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

An object moves with velocity v (t) = t^2-8t+7 a) write a polynomial expression for the position of the particle at any time t greater or equal to zero.