a 10,000kg railroad car is traveling with an initial speed of 24.0 m/s when it strikes an identical railroad car that is initially at rest. as a result of the collision the cars coupled together. what is initial speed of the coupled cars and how much original kinetic energy was lost in this collision? what are some sources of lost of energy of motion.

## What is the speed and direction of puckTwo identical pucks are on an air table. Puck A has an initial velocity of 2.0 m/s in the +x-direction. What is the speed and direction of puck B after the collision |

## Determine the initial charge on the capacitorA 6x10^-6 F capacitor is initially charged to 100V, then is connected across a 500Ohm resistor. What is the initial charge on the capacitor |

## Calculate the rms current flowA circuit consists of a .15 microF capacitor, a 600 ohms resistor, and a 70mH inductor in series. Calculate the rms current flow |

## What is the minimum thickness of the plexiglassin a Tom's double-slit experiment using 549nm light, a thin piece of plexiglass of refractive index 1.53 covers one of the slits. what is the minimum thickness of the plexiglass |

## Find the maximum speed achieved by the sphereTwo plastic spheres, each carrying charge uniformly distributed throughout its interior, are initially placed in contact and then released, Find the maximum speed achieved by the sphere of mass 50.0g |

## Compute the flux that passes through the circular loopA square loop of wire consisting of a single turn is perpendicular to a uniform magnetic field. What is the flux that passes through the circular loop |

## Find the diameter of a ball floating in a freshwater pondThe ball sinks to the point where none of it extends out of the water and remains submerged such that the child does not sink. The child has a mass of 36 kg. What is the diameter of the ball? Suppose for this problem that the ball has negligible m.. |

## Estimate the longest wavelength of the lightlight with a wavelength range of 145-295 nm shines on a silicon surface in a photoelectric effect apparatus, What is the longest wavelength of the light that will eject electrons from the silicon surface |

## Calculate the dispersion of the slabA light beam containing red and violet wavelengths is incident on a slab of quartz at an angle of incidence of 50.7°. Find the dispersion of the slab |

## Find the force of friction that the driveway exertsA house painter stands 3 m above the ground on a 4.9-m-long ladder that leans against the wall at a point 4.7 m above the ground. find the force of friction that the driveway exerts on the bottom of the ladder |

## Find the force exerted by the lower string on lower blockTwo block each of 3.0 kg are held by strings. The upper string exerts a force F of 100 Newtons. find the force exerted by the lower string on the lower block |

## How high above the ground is the highest pointA skateboarder shoots off a ramp with a velocity of 6.4 m/s, directed at an angle of 62° above the horizontal. How high above the ground is the highest point that the skateboarder reaches |

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