Module 7 Flashcards

1
Q

What is a black hole?

A

An object so dense that not even light can escape its gravitational pull.

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2
Q

What is the unit for frequency?

A

1/sec ; Hertz ; Hz

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3
Q

What is frequency (f)?

A

The number of times per second an object in uniform circular motion travels around the circle.

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4
Q

What is period (T)?

A

The time it takes for an object in uniform circular motion to travel through one full circle.

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5
Q

What is gravity?

A

The attractive force that exists between all objects which have mass.

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6
Q

On a flat curve, does the mass of a car affect the speed at which it can stay on the curve?

A

no.

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7
Q

What is centripetal acceleration?

A

The acceleration caused by centripetal force.

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8
Q

What is centripetal force?

A

The force necessary to make an object move in a circle. It is directed towards the center of the circle.

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9
Q

What is uniform circular motion?

A

Motion in a fixed circle at a constant speed.

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