**Question**

1. Gravity (You shouldn’t need a calculator for these problems)

(a) sum up the universal law of gravitation in words. Then state the law mathematically, explaining the meaning of each symbol in equation.

2. Understanding Newton’s Version of Kepler’s Third Law

(a) make up another solar system, with a star of the same mass as the Sun. Suppose there is a planet in that solar system with a mass four times that of the Earth, orbiting at a distance of 1 A.U. from the star. What is the orbital period of this planet? Describe, in words, the reason for your answer.

(b) Suppose a solar system has a star that is nine times the mass of our Sun. If that solar system has a planet the same size as Earth orbiting at a distance of 1 A.U., what is the orbital period of the planet? Clarify, in words, the reason for your answer.

3. Using Newton’s Version of Kepler’s Third Law You will need a calculator for these problems.Answers from Internet won’t do (and may be wrong), you MUST show your work.

Compute orbital period of the International Space Station if it is in a circular orbit 370 kilometers above Earth’s surface. (Does your answer make sense? Remember, satellites in low Earth orbit have periods around 85 minutes. How should your answer compare to these?)

Illustrates the difference between acceleration and velocity : Illustrates the difference between acceleration and velocity |

Define domestic tourist and international tourist : Define the following terms- i. A tourist destination ii. International excursionist and domestic excursionist iii. Domestic tourist and international tourist iv. The hospitality industry |

Find distances between the lens and the film : Find distances between the lens and the film |

Coefficient of kinetic friction between tires and road : Coefficient of kinetic friction between tires and road |

What is newtons version of keplers third law : What is Newtons Version of Keplers Third Law |

Discuss the impacts of cultural tourism on the host society : Distinguish between the different typologies of cultural tourists, illustrating your answer with examples Critically discuss the impacts of cultural tourism on the host society and destination |

How much time is necessary to catch the car : How much time is necessary to catch the car |

How much work done against force of gravity : How much work done against force of gravity |

What is tension t in each of the cables : What is tension T in each of the cables |

## Find the magnitude of the resulting magnetic fieldA sphere of radius R is uniformly charged to a total charge of Q. It is made to spin about an axis that passes through its center with an angular speed ω. Find the magnitude of the resulting magnetic field at the center of the sphere. |

## Find the equivalent resistanceA resistor is in the shape of a cube, with each side of resistance R . Find the equivalent resistance between any two of its adjacent corners. |

## What is the electric field at the locationQuestion: Field and force with three charges? What is the electric field at the location of Q1, due to Q 2 ? |

## What is the maximum displacement of the bridge deckWhat is the maximum displacement of the bridge deck? |

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## Introductory mechanics: dynamicsCalculate the smallest coefficient of static friction necessary for mass A to remain stationary. |

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