Which increases the work output of a machine?

A reducing friction

B reducing input distance

Cincreasing output distance

Dincreasing friction

Explain why the gravitational attraction between the Sun and Earth increases as Earth moves from position C to position D

Which two statements describe a situation that would result in a change to landforms on Earth's surface. A. A volcano erupts on a small island. B. A cold front causes a drop in temperature. C. Flooding loosens dirt and rocks along a hillside.

A liquid is used to make a mercury-type barometer. The barometer is intended for space-faring astronauts.

Solar radiation bounces off of a polar ice cap, then goes into the atmosphere where it remains trapped. Which statement best describes this situation? A). The radiation is absorbed by the ice and then reflected by the atmosphere. B).

Sandra's is riding a bicycle at 10.0 meters/second. She slows down to 2.0 meters/second in 10 seconds her acceleration is

The equation e = mc2 relates mass and a. energy b. force c. work d. gravity

What should a scientist do to use scientific methods for determining the relative age of Earth's rocks? A be biased in opinion B disregard views of others C use creative ideas D prove that methods are non-testable

If a sample of gas is heated at a constant pressure what will happen to the volume of the gas

1. What is the speed of sound in air that has a temperature of 90.0 °C?

What effect does a doubling of the mass have upon the acceleration of the object? Be quantitative.