Q1. A guitar string is 75 cm long and has a mass of 3.8 g. From the bridge to the support post (= L) is 60 cm, and the string is under a tension of 558 N.

What is the frequency of fundamental?

What is the frequency of first overtone?

What is the frequency of second overtone?

Q2. An underwater diver sees the sun 58{rm ^circ} above horizontal. How high is the sun above the horizon to a fisherman in the boat above the diver?

## How far away did the shell hitIf air resistance & other effects are ignored how far away did the shell hit. |

## Illustrate what is the number of shares be used in computingIllustrate what is the number of shares to be used in computing basic earnings per share and diluted earnings per share, respectively, for the year ended December 31, 2007? |

## Explain what was the bullet flight timeA 4.20kg steel ball strikes a wall with a speed of 7 m/s at an angle of 60° with the surface. It bounces off with the similar speed and angle. If the ball is in contact with the wall for 0.20 s, what is the average force exerted by the wall on bal.. |

## What is the acceleration of box across the floorA helicopter is ascending vertically with a speed of 5.20m/s. at a high of 125m above the earth, a package i dropped from a window. How much time does it take for the package to reach the ground? (Hint: the package's initial speed equals helicopte.. |

## What is the change in gravitational potential energyA 0.19-kg stone is held 1.2 m above the top edge of a water well and then dropped into it. The well has a depth of 5.6 m. What is the change in gravitational potential energy of the system from release to reaching the bottom of the well |

## Illustrate what angular speed is neededIllustrate w hat angular speed (in revolutions per minute) is needed for a centrifuge to produce an acceleration of 720 times the gravitational acceleration 9.8 m/s2 at a radius of 9.95 cm ? |

## With what speed and angle of impact does the stone landA student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 17.0 m/s. With what speed and angle of impact does the stone land |

## Explain why the daytime sky looks blueFind out the angle between the filter's polarizing axis and the direction of polarization of light necessary to increase the ratio of the clouds' intensity to that of blue sky so that it is three times the normal value. |

## Determine the current being supplied by the players batteryAn MP3 player operates with a voltage of 3.7 V, and is using 0.28 W of power. Find the current being supplied by the player's battery |

## 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 |

## Calculate what mass of hydrogen the sun convert into heliumUse the value of the Sun's luminosity (3.90×10^26 watts, or 3.90×10^26 joules per second) to calculate what mass of hydrogen the Sun will convert into helium during its entire main-sequence lifetime of 1.2×10^10 years. |

## How fast will he be travelling when he hits the deerTwo cars with equal mass collide head on. One car is going 18 mph. That car is push backward about 38 feet. What is the speed of other vehicle. |

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