The chemical combination of two or more different atoms in fixed amounts is called a (n)

element.

compound.

orbit.

mixture.

Carlotta does 2000 j of work on a machine. The machine does 500 J of work what is the efficiency of this machine

A proton has an initial speed of 3.7*10^5 m/s. a) What potential difference is required to bring the proton to rest? (V) b) What potential difference is required to reduce the initial speed of the proton by a factor of 2?

Which body part would most likely be affected by the improper application of a compression wrap? A. tendons B. ligaments C. bones D. tissues

Science what is a roof on a house a inclined plane, screw, wheel and axle, wedge, pulley or lever

What is an intraplate quake? What causes them?

For a vacation, you and your family fly east to west from Boston, Massachusetts, to Seattle, Washington. You notice that your flight back home to Boston is shorter than your flight to Seattle. Which phenomenon causes your flight home to be shorter?

You spy on an anchor on the bottom of a lake. What is the direction and amount of force the water exerts on it: a) zero b) up, equal to the weight of the anchor. c) up, less than the weight of the anchor d) down, equal to the weight of the anchor.

How are electromagnetic waves different from matter waves?

A dc generator is the same as a (n) a. electric motor. b. ac generator. c. armature. d. electric current.

Which of the following best describes scientific knowledge A.) Durable B.) Absolute and never changing C.) Frequently varies