A 75 g Frisbee is thrown from a point 1.2 m above the ground with a speed of 14 m/s. When it has reached a height of 2.2 m, its speed is 10.5 m/s. What was the reduction in Emec of the Frisbee-Earth system because of air drag?

## What would be the tension in the towlineThe engine of a motorboat delivers 29.8 kw to the propeller while the boat is moving at 18.0 m/s . What would be the tension in the towline |

## What is the distance to the targetA person holds a rifle horizontally and fires at a target. The bullet has a muzzle speed of 200m/s, The air temp is 72 degrees Fahrenheit. What is the distance to the target |

## What is the rods terminal speedThe figure below shows a conducting rod sliding along a pair of conducting rails. The conducting rails have an angle of inclination of theta= 39.0 degrees. What is the rod's terminal speed? |

## What frequency would a fish hearA buzzer generates a sound by vibrating with a frequency of 440 Hz in air. If this buzzer is placed under water, What frequency would a fish hear |

## How long are the stringswo small metallic spheres, each of mass m = 0.220 g, are suspended as pendulums by light strings of length L, How long are the strings |

## What is the change in its momentum on leaving the rocketA light bulb emits light uniformly in all directions. The average emitted power is 150.0 W. At a distance of 4.50 m from the bulb, find out (a) the average intensity of the light, (b) the rms value of the electric field, and (c) the peak value of t.. |

## Find the temperature of the hot reservoirA heat engine has a maximum possible efficiency of 0.800. If it operates between a deep lake with a constant temperature of 287.0 k, what is the temperature of the hot reservoir |

## Determine the mass of ice that melts into waterA 37-kg block of ice at 0Â° C is sliding on a horizontal surface. The initial speed of the ice is 6.2 m/s, Determine the mass of ice that melts into wate |

## What is the average force on the bulletA 7.01- g bullet is moving at 563.00 m/s as it leaves the 0.58- m-long barrel of a rifle. What is the average force on the bullet as it moves down the barrel |

## Determine the coefficient of linear expansionIf a material increases it's length from 160m to to 163.20m when it's temperature is raised 160 degrees C, determine the coefficient of linear expansion |

## What is the maximum height hA boy shoots a BB gun horizontally at a target 15 m away. The gun is aimed directly at the center of the target, but the small metal BB hits 56 cm lower. avoid any air resistance, what was the initial speed of the BB. |

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