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

What is superluminal speed?

Discuss how electric current is able to flow.

What is the equation for gravitational potential energy?

Which statement best describes what happens when a sound source is moving? As the sound source approaches the observer, the pitch decreases and continues to do so as it passes the observer.

Jasmine broke the antenna on her radio receiver. How will this most likely affect Jasmine's radio?

What does Newton's second law of motion say

Two sinusoidal waves are moving through a medium in the positive x-direction, both having amplitudes of 7.00 cm, a wave number of k=3.00m-1, an angular frequency of ω=2.50s-1, and a period of 6.00 s, but one has a phase shift of an angle ϕ=π12rad.

Which season does the Southern Hemisphere experience when it is tilted toward the sun? A. winter B. summer C. spring D. autumn

For an ideal fluid flowing through a horizontal pipe, Bernoulli's principle and the continuity equation state that the pressure within the pipe does which of the following? (Assume measurements are taken along the pipe in the direction of fluid flow.

A bowling ball has a mass of 40kg and is kicked with a force of 10 N. What is it's acceleration