A 10000 kg boxcar traveling at 16 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 6.0 m/s. What is the mass of the second car?

## Compute the total energy stored in the two capacitorsTwo capacitors, C1 = 32.0 µF and C2 = 4.00 µF, are connected in parallel and charged with a 110-V power supply. Calculate the total energy stored in the two capacitors |

## Compute the potential at the center of sphereA charged conducting sphere has a radius of 10.0 cm and is surrounded by an electric field. What is the potential at the center of sphere |

## Find how many photons are emitted in each pulseA ruby laser emits an intense pulse of light that lasts a mere 30 ns. The light has a wavelength of 690 nm , and each pulse has an energy of 700 mJ. How many photons are emitted in each pulse |

## Determine the tension in each ropeA window washer is standing on a scaffold supported by a vertical rope at each end. The scaffold weighs 192 N and is 3.1 m long. What is the tension in each rope |

## What is that students percent error for the experimentIf a lab student determines the coeffient of linear expansion of aluminum is 26.4 x 10-6, what is that student's percent error for the experiment |

## Calculate the tangential speed of the ballA 0.700-kg ball is on the end of a rope that is 0.90 m in length. The ball and rope are attached to a pole and the entire apparatus, What is the tangential speed of the ball |

## At what height will the stream of water strike the buildingA fireman, 53.4 m away from a burning building, directs a stream jet of water from a ground level fire hose at an angle of 30 above the horizontal. at what height will the stream of water strike the building |

## What is the approximate radius of the nucleus of this atomA certain atom has atomic number Z = 20 and atomic mass number A = 42. What is the approximate radius of the nucleus of this atom |

## How many kwh of energy does toaster useHow much work did movers do (horizontally) pushing a 150-{rm kg} crate 10.6 m across a rough floor without acceleration, if the effective coefficient of friction was 0.50. |

## What is the gravitational force sphere exerts on ring-shapedAn object in the shape of a thin ring has radius a and mass M. What is the gravitational force that the sphere exerts on the ring-shaped object |

## A beam of light propagating in glassA beam of light propagating in glass (n=1.52) is incident on an interface with an unknown material. When the incident angle is exactly 62° the all of the light is reflected at this interface, but for smaller angles some light is transmitted. What is .. |

## Calculate the original momentum of the fullbackA 81-kg fullback is running at 3.3m/s to the east and is stopped in 0.85s by a head-on tackle by a tackler running due west. Calculate the original momentum of the fullback |

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