It takes 86 joules of energy to raise a box 2 meters using the pulley setup shown above. Without the pulley, the box can be raised 2 meters using only 82 joules of energy. What could explain this 4-joule difference?

What is the difference between magnitude and intensity

When a mass is placed on a spring with a spring constant of 60.0 newtons per meter the speing is compressed 0.500 meter. how much energy is stored in the spring?

What are the dark spots and light areas on the moon called

What equivalency exists between solid volume and liquid volume

Which one of the following scenarios accurately describes a condition in which resonance can occur? A. A vibrating tuning fork is struck and begins to vibrate as the object used to strike it is placed away from the tuning fork. B.

Lemonade powder is stirred into water until it dissolves. Which are true statements? Check all that apply. A. Lemonade is the solute. B. Water is the solvent. C. Lemonade is the solvent. D. Water is the solute.

Nikolas, the fire extinguisher, and the skateboard have a combined mass of 50 kg. What force would the fire extinguisher have to produce to propel Nikolas if he wanted to accelerate at a rate of 1.

A set of data is collected from a simple circuit with a 20 resistor and is represented in the table

A skydiver of mass m jumps from a hot air balloon and falls a distance d before reaching a terminal velocity of magnitude v. Assume that the magnitude of the acceleration due to gravity is g. a.

8. What happens to force when mass is increased?