According to Ptolemy's model of the movement of celestial bodies,

A. the earth rotates around the sun.

B. the sun is the center of the universe.

C. the earth rotates around the moon.

D. planets orbit in circular paths around the earth.

A box is dropped onto a conveyor belt moving at 3.40 m/s. If the coefficient of friction between the box and the belt is 0.270, how long will it take before the box moves without slipping

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

Which statement describes a problem with the peer review process in scientific research? It can sometimes reject important new ideas or novel techniques. It forces new scientists to meet the same standards that established scientists meet.

Why does sound travel faster in water than in air? A. because water is a denser medium than air B. because air is a denser medium than water C. because water has a larger wavelength than air D. because air has a larger wavelength than water

What are the tiny particles that make up elements called?

The measure of the force of gravity on an object, expressed as mass of the object times acceleration due to gravity is called

Which of the following jobs does not require good swimming ability

An object has an emissivity of 0.725. At temperature T, it radicates heat at a rate of 10 W. What is its rate of heat radiation at temperature 2 T

Which of the following is an instance of persuasive speaking? a. a coach reviewing the offensive plays for next week's game b. a lawyer explaining the details of a plea bargaining agreement to her client. c.

What is needed to support life