# Physics homework help

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## Picket Fence Free fall lab

Picket Fence Free Fall

We say an object is in free fall when the only force acting on it is the earth’s gravitational force.

No other forces can be acting; in particular, air resistance must be either absent or so small as to

be ignored. When the object in free fall is near the surface of the earth, the gravitational force on

it is nearly constant. As a result, an object in free fall accelerates downward at a constant rate.

This acceleration is usually represented with the symbol g.

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## Week 5: Newton's Law Circular Motion

Need in around 6-7 hours.

9 questions only.

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## Newton's Laws, Circular Motion

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## Physics Assignment (2 Qs only)

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## Physics Quiz

1. When light bends as it enters a different medium the process is known as what?

2. A magnifying glass is what type of lens?

3. Electric resistance is typically measured in what units?

4. A person who studies physics is known as a?

5. Metals expand when heated and do what when cooled?

6. What is the first name of the famous scientist who gave us Newton’s three laws of motion?

7. What state of the art computer technology is used to train pilots when wanting to copy the experience of flying an aircraft?

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## CHAPTER 1 AND 2 SOLUTION - guide

1. A person claiming to have paranormal powers states that she can predict which card will come up next in a shuffled deck of cards simply by exercising her mental powers. Is this a testable claim? Explain.

2.What are the primary advantages of the metric system of units over the older English system of units? Explain.

3. A pirate map indicates that a treasure is buried 50 paces due east and 120 paces due north of a big rock. Will you know where to dig? Explain.

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