According to present theories of light, in some experiments light seems to be: 1)composed of particles which can neither be created nor destroyed. 2)a particle whose quantized energy depends on its velocity. 3)a wave that moves from one place to another if there is material to vibrate. 4)deflected due to repulsion from very massive objects. 5)none of the above.

## Determine the frequency of circlingAn electron with kinetic energy 3.90 keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is 12.0 cm. find the frequency of circling |

## Determine the radius of the wheela cylindrical wheel is rotating with a constant angular acceleration of 4.0 rad/s^2. At the instant it reaches an angular speed of 2.0 rad/s, What is the radius of the wheel |

## Find the period of the satellites orbitA satellite moves in a circular orbit around the Earth at a speed of 5680 m/s. Determine the period of the satellite's orbit |

## Illustrate what is the minimum coefficient of frictionTraffic is moving along the highway at 51 km/h on a rainy day. Illustrate what is the minimum coefficient of friction between tires and road that will allow cars to negotiate the turn without sliding off the road? |

## What are their resulting velocitiesTwo 6.0 kg objects head toward each other. Object A moves with a velocity of +7.0 m/s and Object B travels with a velocity of -5.0 m/s. What are their resulting velocities if the collision is perfectly elastic |

## What is the magnifying power of an astronomical telescopeWhat is the magnifying power of an astronomical telescope consisting of a reflecting mirror whose radius of curvature is 7 m, and an eyepiece whose focal length is 25 mm |

## Calculate the velocity of their center of massA ball of mass 0.190 kg has a velocity of 1.47 i m/s; a ball of mass 0.305 kg has a velocity of -0.392 i m/s.They meet in a head-on elastic collision. Find the velocity of their center of mass |

## What is its cop operated as a refrigeratorIf the efficiency of a reversible engine is 28.%, what is its COP operated as a refrigerator |

## Obtain the frequency of this waveThe distance between a node and the nearest antinode of a standing sound wave in air is 8.25 m. obtain the frequency of this wave |

## What is the charge on the ball bearingA small glass bead has been charged to + 25nC . A tiny ball bearing 3.0cm above the bead feels a 1.8×10?2Ndownward electric force. What is the charge on the ball bearing |

## Explain what is the speed of the second asteroidWhat is the speed of the second asteroid? Now suppose that the first and second asteroids carry charges of 3.68 C and -3.68 C, respectively. How fast would the second asteroid have to be moving in order to occupy the same circular orbit as before? |

## Find the maximum inclination angle for the boardA circular wire loop of radius 13cm carries a current of 3.66 A. It is placed so that the normal to its plane makes an angle of 34.8° with the uniform magnetic field of magnitude 9.70 T. |

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