A box of unknown mass is sliding with an initial speed vi = 5.90 m/s across a horizontal frictionless warehouse floor when it encounters a rough section of flooring d = 2.10 m long. The coefficient of kinetic friction between the rough section of flooring and the box is 0.100. Using energy considerations, determine the final speed of the box after sliding across the rough section of flooring.

Find the normal force between the ball and the wall : a spherical ball hanging on a string on a smooth, frictionless wall. The mass of the ball is m, its radius is R, and the length of the spring is L. Find the normal force between the ball and the wall |

Find how long does it take to stop after power is turned off : When the power is turned off on a turntable spinning at 82.0 rpm, you find that it takes 10.8 revolutions for it to stop while slowing down at a uniform rate. How long does it take to stop after the power is turned off |

Determine what was the angular velocity of the wheel : Emilie's potter's wheel rotates with a constant 2.90 rad/s^2 angular acceleration. What was the angular velocity of the wheel at the beginning of the 3.70 s interval |

Calculate the magnitude of impulse exerted on the clay ball : A superball and a clay ball are droped from a height of 10 cm above a table top. They have the same mass 0.05 kg and the same size. The superball bounces off the table and rises back to the same height. The clay ball sticks to the table. For the clay.. |

Final speed of the box after sliding across rough section : A box of unknown mass is sliding with an initial speed vi = 5.90 m/s across a horizontal frictionless warehouse floor when it encounters a rough section of flooring d = 2.10 m long. The coefficient of kinetic friction between the rough section of .. |

Calculate the density of the wood and oil : A block of wood with volume V floats in water with 0.70V submerged. In oil the block floats with 0.85V of its volume submerged. calculate the density of the wood and oil |

Calculate the maximum electrical power the house can consume : A modern house is wired for 120.0 V, and the current is limited by circuit breakers to a maximum of 290.0 A. (For the purpose of this problem, treat these as DC quantities.) Calculate the minimum total resistance the circuitry in the house can hav.. |

Calculate how far would it have to drop : A grinding wheel in the shape of a solid disk is 0.300 m in diameter and has a mass of 2.50 kg. How far would it have to drop in free fall to acquire the same amount of kinetic energy |

Compute where is the object : A convex mirror has a radius of curvature of 89 cm. An image is produced 40 cm in front of the mirror. Where is the object |

## How much work is done by the electric field as third chargehow much work is done by the electric field as a third charge q3 = +2.19 nC is moved from point a to point b. (q1 = +9.41 nC, q2 = -9.41 nC) |

## Determine the capacitive reactance of the capacitorA 250 ohm resistor is connected in series with a 4.80 uF capacitor. The voltage across the capacitor is v_{C}=(7.60 V)sin [(120 rad/s}) t ]. Determine the capacitive reactance of the capacitor. |

## Find the diameter of the football players pistonA 56.0kg cheerleader uses an oil-filled hydraulic lift to hold four 110kg football players at a height of 1.30m. find the diameter of the football players' piston |

## What is the diameter of the nozzleWater is moving at a speed of 7.55 m/s through a fire hose with an internal diameter of 5.99 cm. What is the diameter of the nozzle |

## Calculate g for space shuttle territoryCalculate g for space shuttle territory. A 7.0×10-2-{rm kg} toy airplane is tied to the ceiling with a string. When the airplane's motor is started, it moves with the constant speed of 1.30 m/s in a horizontal circle of radius 0.47 m. |

## Calculate the linear expansion coefficientWhen a 79-m-long metal pipe is heated from 14 °C to 39 °C, it lengthens by 2.56 cm. Determine the linear expansion coefficient |

## Where is the angular acceleration of meterstick a maximumA meterstick (L = 1 m) has a mass of m = 0.217 kg. Initially it hangs from two short strings: one at the 25 cm mark and one at the 75 cm mark. Where is the angular acceleration of the meterstick a maximum |

## What are the magnitude of the force on each chargeThree equal charges are placed at the corners of an equilateral triangle 0.50 m on a side. What are the magnitude of the force on each charge if the charges are each -4.5×10^-9 C? |

## Find the frequency of circlingAn electron with kinetic energy 1.52 keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is 22.0 cm, Find the frequency of circling |

## What is the new absolute pressureA gas sample enclosed in a rigid metal container at room temperature (20.0) has an absolute pressure. What is the new absolute pressure |

## How much will the wire stretchA 3.6-kg object is supported by an aluminum wire of length 1.8m and diameter 1.7mm. How much will the wire stretch |

## How far to the side does the top of the pole flexA 19.0 m tall hollow aluminum flagpole is equivalent in strength to a solid cylinder of aluminum 4.50 cm in diameter. How far to the side does the top of the pole flex |

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