Q1. The driver of a 1700 car travelling on a horizontal road at 140 suddenly applies brakes. Due to the slippery pavement, friction of the road on the tires of the car, which is what slows down the car, is 23.0 of the weight of car.

What is the acceleration of car?

How many meters does it travel before stopping in the conditions?

Q2. 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?

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. |

Marginal cost is zero to provide the rides : Assuming that the marginal cost is zero to provide the rides to those in attendance, what is the best pay-per-ride price |

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 magnitude of normal force : A small remote-control car with a mass of 1.60 kg moves at a constant speed of v = 14.0 m/s in a vertical circle inside the hollow metal cylinder that has the radius of 5.00 m. |

Marginal revenue functions : Write the total and marginal revenue functions. |

## What is amplitude of the electric component of the signalWhat is amplitude of the electric component of the signal |

## Find the magnitudes of net force acting on electronA 1590 kg car starts from rest on a horizontal road and gains a speed of 61 km/h in 30 s (a) what is its kinetic energy at the end of the 30 s. |

## Sketch the four possible electric field configurationsAn important news announcement is trans- mitted by radio waves to people who are 122 km away, sitting next to their radios, and by sound waves to people sitting across the newsroom, 1.2 m from the newscaster. Take the speed of sound in air to be 345 .. |

## The acceleration of the second rocketTwo identical spacecraft are to be accelerated by rockets. The first rocket fires with a force 4 times as large as that of the second rocket. The acceleration of the first rocket is how many times as vast as the acceleration of the second rocket. |

## What was the absorbed dose in the carbon wallsWhat was the absorbed dose in the carbon walls? The average mass stopping powers of graphite and CO2 for the photons are, respectively, 1.648 and 1.680 MeV cm^2/g. |

## 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 radius of curvature of a concave mirrorWhat is the tangential acceleration of a bug on the rim of a 13.0-in.-diameter disk if the disk accelerates uniformly from rest to the angular speed of 76.0 rev/min in 3.50 s. |

## What are the maximum values of the electricSuppose the gravitational force between two massive spheres is 100 N. If the distance between the spheres is doubled, what is the force between the masses. |

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