Defining Mechanical Advantage and Efficiency

Mechanical advantage is the ratio of

Efficiency is the ratio of

expressed as a percentage.

Intro

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Activity

Serious question ... Smog is a type of air pollution. It is a mixture of fog and smoke or other airborne pollutants such as exhaust fumes. What is a result of smog that effects the quality of life for organisms? A. acid rain B. floods C.

Why do spiral galaxies appear blue in color?

What would increase the reaction rate?

Which is the thick white substance that accumulates at the side of a cut in the process of healing?

The energy an object has as a result of it being in motion is called? What kind of energy?

A chemical bond formed when Adams share three pairs of electrons is A. an ionic bond B. a single bond C. a double bond D. a Triple bond

A 1100 kg car rounds a circular turn of radius 24.6 m. Of the road is flat and the coefficient of static friction between the tires and the road is 0.59, how fast can the car go without skidding

What is the momentum of a 15 kg tire rolling down a hill at 3 m/s? 5 kg • m/s 18 kg • m/s 45 kg • m/s 60 kg • m/s

Which of Newton's laws, when combined algebraically with his law of universal gravitation, can be used to calculate Earth's mass? A) first B) second C) third

Why does a balloon filled with helium rise while a balloon filled with an equal volume of average atmospheric air does not? A. Helium has no mass, but air does. B. Helium increases the balloon's mass more than air. C.