If a lever system has an output force (load) of 20 kg and an input force (Effort) of 100 kg, the mechanical advantage of this lever is:

A. 2000

B. 0.2

C. 0.5

D. 5

Jenny runs on the cross-country team for school. She is working on her 10 mile race time. On Day 1, she runs 10 miles over 120 minutes. Find Jenny's average speed on Day 1! Hint: 120 minutes = 2 hours Average speed = miles per hour

The Kinect energy of a book on a shelf is equal to the work done to lift the book to the shelf True or False

What is the purpose of the three R's of resource management? A. to remove resources from homes B. to conserve resources C. to consume increasing amounts of natural resources D. to spread out landfill areas

A generator contains a coil that spins to produce an electric current. How is energy transformed by using a generator

A playground merry-go-round of radius R = 1.40 m has a moment of inertia I = 245 kg · m2 and is rotating at 9.0 rev/min about a frictionless vertical axle. Facing the axle, a 24.

A box of books has lessequalmore inertia than a box of cotton balls.

A penny is placed on a rotating turntable. Where on the turntable does the penny require the largest centripetal force to remain in place? Give your reasoning.

Is the temperature of a normal healthy old man is less than that of a normal healthy young man?

What does the second law of thermodynamics say about entropy apex?

If an oscillation is moving up and down in the y-axis and the wave is traveling to the right in the x-axis, what type of wave is this?