which of the following is an example of a compound machine. a. a bicycle chain. b. a coffee mug. c. a paper cutter

How much work would be needed to raise the payload from the surface of the moon (i. e., x = r) to the "end of the universe"?

in the 1950s an experimental train that had a mass of 33200kg was powered across a level track by a jet that produced a thrust of 5.03*10^5N for a distance of 494m. Find the work done on the train

What is not a similarity between mars and earth today?

Write a paragraph that explains how a droplet of water that falls as rain can move through the atmosphere, the biosphere, the geosphere, and the hydrosphere.

What horizontally-applied force will accelerate a crate of mass 400 kg at 1 meter per second per second across a factory floor against a friction force of half its weight?

What is body dysmorphia?

Which of Newton's laws explains why your hands get red when you press them hard against a wall? A. Newton's law of gravity B. Newton's first law of motion C. Newton's second law of motion D. Newton's third law of motion

A glass plate (n = 1.64) is covered with a thin, uniform layer of oil (n = 1.27). A light beam of variable wavelength from air is incident normally on the oil surface. Observation of the reflected beam shows constructive interference at 501 nm.

Democritus proposed that atoms are held together by chemical bonds, but no one believed him. True or False

A 51.7 kg box initially at rest is pushed 6.99 m along a rough, horizontal floor with a constant applied horizontal force of 84.1457 N. If the coefficient of friction between box and floor is 0.142, find the work done by the applied force.