If the resistance force is 40 Newtons and the effort force is 20 Newtons, what is the mechanical advantage?

what if i have a negatively charged plastic rod near a tiny piece of paper that is resting on a tabletop. Will the paper be attracted or repelled?

The amount of pressure in a gas is measured in pascals. true or false

An alloy that contains mainly copper and tin is

A blender uses 1500 joules of energy in 5 seconds. What is the power rating of the blender

Why does sandpaper get hot when it is rubbed against rusty metal?

a family backpacking at Yosemite national park took 5 hours to climb a mountain trail 7.5 km long. what was the family's average speed

You apply a force of 54 N to a car jack in order to change a tire. Each "Crank" of the jack is exerted over a distance of 64 cm. What is the work input on the car jack? (Hint: 1m = 100 cm) Step # 1 Step #2 Step #3

An object is dropped from a height of 25 meters. At what velocity will it hit the ground? A. 7.0 meters/second B. 11 meters/second C. 22 meters/second D. 49 meters/second E. 70 meters/second

The force between a pair of. 005 charges is 750 N. What is the distance between them?

What is Nitrogens main function in the atmosphere?