Whta is the mechanical advantage when the effort force is 20 and the resistance force is 5

In most circumstances, the normal force acting on an objectand the force of static friction do no work on the object. however, the reason that the work is zero is different for the two cases. explain why each does no work.

My house is 95km away and you are driving at 85 km/h. How long will it take you to get here?

What is a factor that does not change because other values have changed?

In an electron cloud, an electron farther away from the nucleus has?

A futuristic design for a car is to have a large solid disk-shaped flywheel within the car storing kinetic energy. The uniform flywheel has mass 370 kg with a radius of 0.500 m and can rotate up to 210 rev/s.

What happens to the total mechnical energy of the apple as it falls from the tree?

Fair Bonus Question: Derive the equation for gravitational potential energy, starting with the definition of work.

A juggler throws a bowling pin into the air with an initial velocity. Another juggler drops a pin at the same instant.

The liquid electrolyte in the battery typically takes what kind of net charge? a. positive b. negative c. neutral

Relating to Newton's Third Law, action and reaction, what is the reaction when a rocket expels gas, smoke and flames from the nozzle end of the rocket engine?