Which refers to the ratio of output force to input force of a machine?

mechanical advantage

average strength

total power

energy requireme

Consider two concentric conducting spheres. The outer sphere is hollow and initially has a charge Q1 = - 10Q deposited on it. The inner sphere is solid and has a charge Q 2 = + 1Q on it. 1) How much charge is on the outer surface

An atom that has a negative four charge will have which of the following? A.) 4 more protons than electrons B.) An equal amount of protons and electrons C.) 4 more electrons than protons D.) 2 more neutrons than protons

A block slides on a frictionless, horizontal surface with a speed of 1.32 m/s. The block encounters an unstretched spring and compresses it. If it takes the block 0.

Concerning the planetary orbits, why was Copernicus somewhat inaccurate? A. He suggested the orbits were elliptical. B. He suggested the orbits were circles. C. He suggested the orbits were identical. D. He suggested the orbits were equidistant.

A uniform stationary ladder of length L and mass M leans against a smooth vertical wall, while its bottom legs rest on a rough horizontal floor. The coefficient of static friction between floor and ladder is μ.

A light wave is traveling straight up out of the ocean then moves out into the air how do you expect the movement of the light wave to change the light wave will

To verify that this expression for (vf) α has the correct units of velocity, you need to perform some unit analysis. begin by finding the equivalent of a volt in terms of basic si units.

Which of the following best describes transverse waves

What are the arrangement of resistors in series

A pilot flies horizontally at 1300 km/h, at height h! 35 m above initially level ground. However, at time t! 0, the pilot begins to fly over ground sloping upward at angle u! 4.3° (Fig. 2-38).