A fire helicopter carries a 649 kg bucket of water at the end of a 18.7 m long cable. Flying back from a fire at a constant speed of 44.2 m/s, the cable makes an angle of 31.5o with respect to the vertical. Determine the force of air resistance on the bucket.

## How long does it take for the particles to hit the plateSuppose that protons are fired towards the large flat side of a charged conducting plate. How long does it take for the particles to hit the plate |

## Find the distance between the object and the objective lensA dissecting microscope is designed to have a large distance between the object and the objective lens. find the distance between the object and the objective lens |

## What is the length of the thin rodA pendulum is made with a 4.00 kg mass suspended at the end of a thin rod, What is the length of the thin rod |

## Estimate the terminal velocity for a dust particle in airEstimate the terminal velocity for a dust particle in air. Assume it has a radius of 1.0 um and a density similar to that of balsa wood |

## Obtain the speed of the rodA rod 89 cm long moves in a plane perpendicular to a magnetic field of 510. G. The velocity of the rod is perpendicular to its length. Find the speed of the rod |

## Determine how high is the imageYou place a 3.63-mm-high diamond on the axis of and 12.7 cm from a lens with focal length -5.15 cm. How high is the image |

## Determine the free-fall accelerationWhat is the free-fall acceleration toward the sun at the distance of the earth's orbit? [The mean distance the earth is from the sun in its orbit is 1.50x10^11 m |

## Find the acceleration of the car after the brakes faileda car originally traveling at 30 m/s manages to brake for 5 seconds while traveling 125 m down hill. find the acceleration of the car after the brakes failed |

## What is the weight of the bowling ballbowler uses a 5-kg bowling ball. What is the weight of the bowling ball, What is the momentum of the ball |

## Find its coefficient of linear expansionIf a material increases its length from 130 m to 132.60 m when its temperature is rasied 155 degrees C, what is its coefficient of linear expansion |

## What is the buoyant force exerted on it by the airAn empty storage tank has a volume of 144 ft3. What is the buoyant force exerted on it by the air |

## Calculate the angle of refraction for each rayFour rays of light are incident on a surface of water. Their angles of incidence are 20, 30, 45, y 60 degrees. Calculate the angle of refraction for each ray |

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