Q1. A 0.27 kg rock is thrown perpendicularly upward from the top of the cliff that is 32 m high. When it hits the ground at the base of cliff, the rock has a speed of 29 m/s. suppose that air resistance can be ignored, find out A) initial speed of the rock and B) greatest height of the rock as measured from the base of cliff.

Q2. An 18 kg loudspeaker is suspended 2.7 m below ceiling by two cables that are each 70 degrees from vertical. What is the tension in cables?

Describe the discretionary and non-discretionary : Describe the Discretionary and Non-discretionary Fiscal Policy you would advise |

Compute the length of the cables supporting the trapeze : A man pushes a lawnmower for 13.1 m along a handle that makes a 28.2° angle with the ground. He pushes with a force of 42.8 N even as the force of friction between the lawnmower and the ground is 13.7 N. |

What is the work completed on the man : A 79.0 kg man is riding in a shopping mall. The escalator moves the man at constant velocity from ground level to the floor above, the vertical height of 4.40m.What is the work completed on the man by the gravitational force and the escalator. |

Occasional currency interventions by central banks : Which system would be accompanied by occasional currency interventions by central banks to stabilize or alter rates to avoid persistent balance of payments deficits or surpluses. |

What is the tension in cables : A 0.27 kg rock is thrown perpendicularly upward from the top of the cliff that is 32 m high. When it hits the ground at the base of cliff, the rock has a speed of 29 m/s. suppose that air resistance can be ignored, find out A) initial speed of the ro.. |

Government seeks counsel : Their government seeks counsel on the wisdom of a relative emphasis on health and health investment versus other forms of economic investment. |

What is the acceleration of car : Boat A negotiates a curve whose radius is 370 m. Boat B negotiates a curve whose radius is 120 m. Each boat experiences the similar centripetal acceleration. What is the ratio of speed of boat A to that of boat B. |

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What is the speed of the block : A staging that weighs 440 N supports two painters, one 110 N and the other 460 N. The reading in the left scale is Ft = 800 N. What is the reading Fr, in the right hand scale. |

## What is the magnetic force on the section of wireA fun-loving 11.4 {rm kg} otter slides up a hill and then back down to the same place. If she starts up at 5.75 {rm m/s} and returns at 3.75 {rm m/s}, how much mechanical energy did she lose on the hill. |

## What is the effect of thermal insulation on coolingWhat is the effect of thermal insulation on cooling |

## What is the acceleration of carBoat A negotiates a curve whose radius is 370 m. Boat B negotiates a curve whose radius is 120 m. Each boat experiences the similar centripetal acceleration. What is the ratio of speed of boat A to that of boat B. |

## What would be the ball''s subsequent trajectoryA rattlesnake can strike with the acceleration equivalent to an increase in speed from 0 to 60 mi/h in 1/2 s. If the rattlesnake's head weighs 0.33 lb, what average power does the rattlesnake generate throughout its strike. |

## What is the ratio of the speed of boat aThe resistance of a copper wire of length L meter is 0.1 ohms. If the diameter of the wire is 0.045cm, find out its specific resistance. |

## What is the acceleration of elevatorA 64-kg man standing on a scale in an elevator notes that as the elevator rises, the scale reads 834 N. What is the acceleration of elevator. |

## How long is the open-closed pipeAn open-open organ pipe is 67.9 cm long. AN open-closed pipe has an essential frequency equal to the third harmonic of the open-open pipe. How long is the open-closed pipe. |

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