An inventor claims to have bulit a machine that can produce 120 J of work with an input of 110 J. Would you believe the inventors claim? Why or why not?

How does an astronaut's inertia on Earth compare to his inertia in space, where he experiences little to no gravitational forces?

1 kg = 2.2 lbs what is the mass in kilograms

To push a certain box across a level floor at constant velocity requires that a horizontal force be applied to the box. The magnitude of this force is half as great as the vertical force required to lift the box.

Como se chamam as linhas que representam a propagação da luz?

Particles have an orderly arrangement in this type of solid. Name this type of solid

Suppose you place a ball in the middle of a wagon, and then accelerate the wagon forward. Describe the motion of the ball relative to the ground. - Describe its motion relative to the wagon.

Water is poured into a container that has a leak. The mass 'm' of the water is given as a function of time 't' by, m=5t^0.8 - 3t + 20, with t>=0, mass in grams and t in seconds a. at what time is the water mass greatest, and b.

Determine the mechanical energy of this object: a 1-kg ball sits on a 10-meter high cliff. A. The ball isn't moving, so the mechanical energy is zero B. 10 J C. 98 J D.

A proton that has a mass m and is moving at + 164 m/s undergoes a head-on elastic collision with a stationary carbon nucleus of mass 12m. the velocity of the proton after the collision is answer

what is the mass number in atomic mass units of an atom with 14 protons, 14 electrons, and 16 neutrons