A rope and pulley system is used to lift a box that weighs 90 Newton's. How much force do you need to pull on the rope if the machine has a mechanical advantage of 5?

Which of these is not an environmental effect of burning fossil fuels? A.) smog B.) poisoning wildlife C.) increased temperature D.) use of large amounts of water

Multiple sound waves reflections in a room are called?

What considerations are important in a well planned system for handling emergency situations

What system of units do scientist use to measure the properties of matter

A box of bananas weighing 40.0 n rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.40 and the coefficient of kinetic friction is 0.20.

A book falls of the table and hits the floor. Is work done? Why?

A person of 83 kg is in an elevator. If the elevator is moving at a speed of 5 m/s, what's the person's kinetic energy? Keep 4 significant figures a 1,004 J b 1,038 c 1,280 J d 980 J e 1,435 J

What two equations can be used to determine the speed of a wave

Which force has an infinite range and is always attractive?

A ramp with a mechanical advantage of 8 lifts objects to a height of 1.5 meters how long is the ramp