Which simple machine is the lid of a jar? a lever a screw an inclined plane a wheel and axle

2 reasons why building and maintaining nuclear power plants is expensive

Find the angular acceleration produced given the mass lifted is 12 kg at a distance of 27.1 cm from the knee joint, the moment of inertia of the lower leg is 0.

An external computer flash drive can hold I gigabyte of data. How many bytes is this

Why does earth orbit the sun instead of the moon? A) the sun is larger than the moon B) The sun is brighter than the moon C) The sun is farther away than the moon D) The sun has more mass than the moon

When a beam of light passes at an oblique angle into a material of lower optical density, the angle of incidence is A. less than the angle of reflection. B. less than the angle of refraction. C. greater than the angle of reflection. D.

Which of the following statements best describes the relationship between force and work? a. Work equals force divided by distance. b. Force and work are two terms for the same thing. c. Work is equal to certain forces, like gravity and friction. d.

A herringbone or tire track pattern on a radiograph is a result of

A 7150-kg railroad car travels alone on a level frictionless track with a constant speed of 24.5 m/s. A 3100-kg load, initially at rest, is dropped onto the car What will be the car's new speed?

How is friction related to conservation if mechanical energy?

Does the ear drum vibrates when struck by sound waves and directly sends a message to the brain that is then recognized as sound?