An open train car, with a mass of 2130 kg, coasts along a horizontal track at the speed 2.41 m/s. The car passes under a loading chute and, as it does so, gravel falls vertically into it for 2.59 s at the rate of 489 kg/s. What is the car\'s speed after the loading is completed? Ignore rolling friction (as unrealistic as that may be).

What is the voltage of an alternator that produces a current : What is the voltage of an alternator that produces a current of 0.039 A if it contains a series RCL circuit with a resistance of 300 ohm, an inductive reactance of 650 ohm and a capacitive reactance of 420 ohm? |

What is the voltage of the alternator : A series RCL circuit includes a resistance of 298 ohm, an inductive reactance of 649 ohm, and a capacitive reactance of 415 ohm. The current in the circuit is 0.317 A. What is the voltage of the alternator? |

Find total charge on plates and voltage across all capacitor : Find the equivalent capacitance of a 4 uF , 6uF and 8uF capacitor connected in parallel that has a 12 volt battery connected in series with the parallel capacitors. Also, find the total charge on the plates and the voltage across each capacitor. |

What is the resistance of the coil in the motor : A vacuum cleaner is connected to a 120V socket and uses 3.0 A when the back emf generated by the electric motor is 72 volts. What is the resistance of the coil in the motor? |

What is the cars speed after the loading is completed : An open train car, with a mass of 2130 kg, coasts along a horizontal track at the speed 2.41 m/s. The car passes under a loading chute and, as it does so, gravel falls vertically into it for 2.59 s at the rate of 489 kg/s. What is the car\'s speed af.. |

Compare this performance with heat transfer of solid silver : A pipe 0.0178 m in diameter and 0.16 m long can transfer 3726 J of heat per second with a temperature difference across the ends of 5?C. Compare this performance with the heat transfer of a solid silver bar of the same di- mensions by finding the rat.. |

Describe the part of the electron while in magnetic field : A electron enters a magnetic field of 0.3 T at an angle of 45 degrees and with a speed of 5 E5 m/s. Find the force on the electron . Describe the part of the electron while in the magnetic field. |

What is the resistance of the platinum wire : Two wires are identical, except that one is silver (resistivity = 1.59×10-8 ?·m) and the other is platinum (resistivity = 1.06×10-7 ?·m). The silver wire has resistance of 1.56 m?. What is the resistance of the platinum wire? |

In a double-slit experiment-second-order bright fringe : In a double-slit experiment, the second-order bright fringe is observed at an angle of 0.62°. If the slit separation is 0.10 mm, then what is the wavelength of the light? I'm getting 5.4104e-6 nm? But I'm not sure what I'm doing wrong. I've tried it .. |

## What is his power outputA 750-N Marine in basic training climbs a 9.5-m vertical rope at a constant speed in 8.25 s. What is his power output |

## A projectile is launched vertically upwardA spherical Balloon is inflated at the rate of 144pie cubic inches per minute (in^3/min). How fast is the radius of the balloon changing when the radius is 4 inches? Recall the formula for volume of sphere: V(4/3) pieR^3? |

## What is the speed of the rockA rock is thrown vertically upward with a speed of 15.0m/s from the roof of a building that is 40.0m above the ground, What is the speed of the rock just before it strikes the ground |

## What is the volume of the boatWhen an open-faced boat has a mass of 5150 kg, including its cargo and passengers, it floats with the water just up to the top of its gunwales (sides) on a freshwater lake. What is the volume of the boat |

## What is the change in kinetic energy of the crateA crate of mass 10.6 kg is pulled up a rough incline with an initial speed of 1.52 m/s. What is the change in kinetic energy of the crate |

## What is the definition of parallaxDescribe the method used to measure the Sun's shadow and in the drawing on page 18 what are the letters b and d used for? |

## Determine the frequency of the stationary sirenWhen an ambulance is stationary, the siren gives off a sound at a frequency of 500Hz. What is the frequency of the stationary siren |

## Find the angle of the second displacementA particle undergoes two displacements, measured from the positive x-axis, with counterclockwise positive. Find the angle of the second displacement |

## What is the gliders horizontal velocityA 9.27-m-long glider with a mass of 545.48 kg (including the passengers) is gliding horizontally through the air at 29.02 m/s, What is the glider's horizontal velocity |

## Calculate the speed at which the ball leaves the gunA gun shoots small plastic balls. The ball falls 1.2 m while traveling horizontally 5.1 m. Calculate the speed the ball leaves the gun |

## Calculate the minimum index of refraction of the prismlight ray is incident normally to the long face (the hypotenuse) of a 45° -45° -90° prism surrounded by air, Calculate the minimum index of refraction of the prism |

## Find average thermal power is produced as the rock stopsA 30.0 kg rock slides on a rough horizontal surface at 7.50 m/s and eventually stops due to friction. What average thermal power is produced as the rock stops |

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