What do we call it when a planet moves backward (east to west) through the stars?

A. retrograde motion
B. the Zodiac
C. prograde motion
D. regression


Answer: A

Physics & Space Science

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Two identical cars are traveling around the same curve on a highway. One of them is moving at 60 mph, and the other is moving at 30 mph. The centripetal force acting on the car moving at 60 mph is __________ the value of the centripetal force acting on the car moving at 30 mph

a. one quarter b. one half c. the same as d. twice e. four times

Physics & Space Science

According to the law of poles, like poles ______________

Fill in the blank(s) with correct word

Physics & Space Science

Suppose an object is moving in a straight line at 50 miles/hr. According to Newton's first law of motion, the object will

A) continue to move in a straight line at 50 miles/hr forever, no matter what happens. B) continue to move in a straight line at 50 miles/hr until it is acted upon by a net force. C) eventually slow down and come to a stop. D) continually slow down, but never quite come to a complete stop.

Physics & Space Science

An electrostatic precipitator uses an electric field to remove smoke from the air

Indicate whether the statement is true or false

Physics & Space Science