A 20 kg satellite has a circular orbit with a period of 2.3 h and a radius of 6.5 106 m around a planet of unknown mass. If the magnitude of the gravitational acceleration on the surface of the planet is 7.6 m/s2, what is the radius of the planet?

## Find the speed of the second playerA football player with a mass of 89 kg and a speed of 2.1 m/s collides head-on with a player from the opposing team whose mass is 120 kg. Find the speed of the second player |

## Find the power flow per unit areaAt some instant and location the electric field associated with an electromagnetic wave in vacuum has the strength 86.9 V/m. Find the magnetic field strength |

## Find the separaton between the slits in micro mettersLight wavelenght 590nm fall on a double slit, and the first bright fringe of the interference pattern is seen at an agle of 13 from the central maximum |

## What is the net vertical force on the airplaneA jet with mass m = 1.3 × 105 kg jet accelerates down the runway for takeoff at 2.4 m/s2, What is the net vertical force on the airplane as it levels off |

## What is the images magnificationA man looks at himself in a concave shaving mirror whose radius of curvature is 48 inches. What is the image's magnification |

## Compute the angle between the two rope and the horizontalA small plane tows a glider at constant speed and altitude. If the plane does 2.09 105 J of work to tow the glider 130m, what is the angle between the two rope and the horizontal |

## What is the diameter of this particular ferris wheelAs they go around, they experience a centripetal acceleration of 2.20 . What is the diameter of this particular Ferris wheel |

## Calculate the orbital period in each of these levelsUsing the Bohr model, calculate the speed of the electron in a hydrogen atom in the n=1,2, and 3 levels. Calculate the orbital period in each of these levels |

## What is the vertical component of the velocityA ball is thrown horizontally from the top of a 85 m building and lands 140 m from the base of the building. What is the vertical component of the velocity just before the ball hits the ground in m/s |

## What is the largest slit widthLight from a helium-neon laser (lamda=633nm) is incident on a single slit. What is the largest slit width |

## What force must be exerted on the smaller rocka branch is wedged under a rock and rests on a small object. the small object is 1.5 m from the large rock and the branch is 11.0 m long. what force must be exerted on the smaller rock |

## Measuring cylinder contains the liquidA piece of string wraps around a cylinder 8 times. The length of the string is 14 cm. calculate the circumference of the cylinder. |

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