A michelson interferometer is used with a helium-neon laser of wavelength 628.8 nm. A glass-walled chamber of interior length 1.005 cm is placed in one of the beams and the position of the mirror is adjusted until bright light is observed at the detector. The glass chamber is then evacuated. During the evacuation, the viewed light changes from bright to dark and back to bright nine times. What is the refractive index of air?

## Find the gravitational force on the satelliteA 200 kg communications satellite is placed into a circularorbit around the Earth with a radius of 4.23 x 107m(26,000 miles). Find the gravitational force on the satellite |

## Find the acceleration of plane at bottom of circular pathA jet plane begins a dive with an initial speed of 135 m/s and accelerates along its path at 20 m/s^2, find the acceleration of the plane at the bottom of the circular path |

## Find the magnitude of the initial momentum of the carA blue car with mass mc = 442 kg is moving east with a speed of vc = 22 m/s and collides with a purple truck with mass mt = 1213 kg that is moving south with a speed of vt = 12 m/s. find the magnitude of the initial momentum of the car |

## Find the ratio of their average densitiesThe free-fall acceleration on the surface of Neptune is about one and one half times that on the surface of the Earth. Find the ratio of their average densities |

## Calculate the angular acceleration of the pottery wheelA small rubber wheel is used to drive a large pottery wheel, and they are mounted so that their circular edges touch. Calculate the angular acceleration of the pottery wheel |

## Calculate initial velocityA projectile is launched into the air with an initial speed of vi at an launch angle of 30 degrees above the horizontal. The projectile lands on the ground 2.0 seconds later. Calculate initial velocity. |

## What is the direction of the current in the second wireA vertical straight wire carrying an upward26-A current exerts an attractive force per unit length of 7.3×10?4N/m, What is the direction of the current in the second wire? |

## What is the velocity of truck immediately after collisionIn a collision between a car of mass 1000 kg and a pickup truck of mass 1600 kg, the truck is initially at rest and the car is moving with a velocity 21 m/s. Immediately after the collision, the car is moving with a velocity 2.0 m/s in the same di.. |

## How much work is required to bring three protonsHow much work is required to bring three protons, initially infinitely far apart, to a configuration where each proton is 1.3 10-15 m from the other two |

## What is the velocity of the fluid in the narrow sectionWater is flowing through a pipe with a constriction. The area of the narrow section is one-half the area of the wide section. what is the velocity of the fluid in the narrow section |

## Calculate the magnitude of the average net forceDuring a car crash a 65kg person's head goes from traveling at 50kmh-1 to stationary in 0.15 s. What is the magnitude of the average net force acting on the head of a person with a 4.5kg head |

## Question1take two indistinguishable metallic tumblers a andquestion1take two indistinguishable metallic tumblers a and b. insulate one tumbler say a by wrapping chart paper |

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