Two people carry a heavy electric motor by placing it on a light board 2.60 m long. One person lifts at one end with a force of 450 N , and the other lifts the opposite end with a force of 690N . Suppose the board is not light but weighs 220 , with its center of gravity at its center, and the two people each exert the same forces as before. What is the weight of the motor in this case? Where is its center of gravity located?

## Estimate the net torque acting on itA CD has a mass of 17 g and a radius of 6.0 cm. When inserted into a player, the CD starts from rest and accelerates to an angular velocity of 17 rad/s in 0.85 s. determine the net torque acting on it |

## Illustrate what average power must the winch supplyIllustrate what average power must the winch supply in order to accelerate a 174-kg ultra-light glider from rest to 23.0 m/s over a horizontal distance of 50.0 m? Assume that friction and air resistance are negligible, and that the tension in the .. |

## What would the tangential speed of those points beIn 1994, Susan Williams of California blew a bubble-gum bubble with a diameter of 58.4 cm. what would the tangential speed of those points be |

## What is the pebbles speed and accelerationYour roommate is working on his bicycle and has the bike upside down. He spins the 70.0cm -diameter wheel, What is the pebble's speed and acceleration |

## Find an expression for the speed of a wave on the ropeA small rope has a linear mass density of 8.00 g/m and is tied to two vertical walls that are separated by three fourths the length of the rope, Find an expression for the speed of a wave on the rope as a function of m |

## Find the dielectric constant of the inserted materialThe voltage across an air-filled parallel-plate capacitor is mesured to be 200 v. find the dielectric constant of the inserted material |

## What is the original speed of the sonA father racing his son has two-fifths the kinetic energy of the son, who has three-fifths the mass of the father. The father speeds up by 1.0 m/s, What is the original speed of the son |

## Estimate the acceleration of cyclist and roller coasterWhat would be the time constant in a RC circuit when R = 200 kohms and C = 10mf? 20 |

## Determine what is the mass of the smaller starTwo stars in a binary system orbit around their center of mass. The centers of the two stars are 6.17x1011 m apart. What is the mass of the smaller star |

## Find the mirrors focal lengthYou are given a spherical mirror and wish to determine its properties. You place an object on its axis, Find the mirror\'s focal length |

## Determine at what rate does the star radiate em energyThe intensity of the light that reaches Earth from the star is 3.94 x 10-21 W/m2. At what rate does the star radiate EM energy |

## Find the average force exerted by the rain on the roofDuring a rain storm, rain comes straight down with a velocity Vi = -15 m/s, find the average force exerted by the rain on the roof during a 3 second time interval |

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd