A rock is thrown downward into a well that is 8.50 deep a)If the splash is heard 1.20 seconds later, what was the initial speed of the rock? Take the speed of sound in the air to be 343.

## Find the wavelength of the beamA pair of narrow slits are .075 mm apart and are located 1.5 m from the screen. Find the wavelength of the beam |

## Compute the radius of the electrons pathAn electron enters a region of space containing a uniform 0.0000179-T magnetic field. Its speed is 151 m/s, Find the radius r of the electron\'s path |

## What is its molar specific heat at constant pressureA certain ideal gas has a molar specific heat at constant volume CV = 7R/5. What is its molar specific heat at constant pressure |

## What is the net force that acts on the planes pilotAn airplane has a mass of 3.46 × 104 kg and takes off under the influence of a constant net force of 3.22 × 104 N. What is the net force that acts on the plane's 71.9-kg pilot |

## Find the acceleration of each blockTwo blocks, masses m1 and m2 are connected by an ideal string passing over an ideal pulley. Find the acceleration of each block |

## Determine from what height did the student fallA student (m = 58 kg) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a time of 0.04 s. From what height did the student fall |

## Q an airplane takes off from the only airstrip in a remoteq. an airplane takes off from the only airstrip in a remote area of canada flies 68.0deg north of east for 177 km then |

## Determine where will he landDarius the dare devil plans to launch his rocket car at the top a ramp inclined at 20.0 degrees to the horizontal over a pit of fire 20 m in diameter, Where will he land |

## Find the magnitude of the peak value of the induced currentSuppose we are given a square coil that is 5.5 cm on a side containing 100 loops of very fine wire. The total resistance of this coil is 2.0 ? 10?3 ?. Find the magnitude of the peak value of the induced current flowing in this coil under these cond.. |

## What current flows in the second wireA vertical straight wire carrying an upward 24?Acurrent exerts an attractive force per unit length of 5.9×10?4N/m on a second parallel wire 7.5cm away |

## Write the displacement vector from aircraft 1 to aircraft 2whose third coordinate is the vertical displacement between the planes. Consider east to be the positive x axis and north to be the positive y axis. |

## Determine what is the magnification of the imageA 5 cm tall object is placed 20 cm to the left of a converging lens with focal length of 10 cm. What is the magnification of the image |

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