A grinding wheel in the shape of a solid disk is 0.300 m in diameter and has a mass of 2.50 kg . The wheel is rotating at 2200 about an axis through its center. What is its kinetic energy? How far would it have to drop in free fall to acquire the same amount of kinetic energy?

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 |

What is the position of the resulting image : An object is placed in front of a concave mirror with a focal length of 37 cm. What is the position of the resulting image if the image is upright |

What is the angular speed of the rod after rings leave it : A uniform rod of mass 3.20×10?2 and length 0.430 rotates in a horizontal plane about a fixed axis through its center and perpendicular to the rod. Two small rings, each with mass 0.190 , are mounted so that they can slide along the rod. |

What percent of his total kinetic energy is rotational : We can roughly model a gymnastic tumbler as a uniform solid cylinder of mass 68.0 kg and diameter 1.20 m. What percent of his total kinetic energy is rotational |

## Find the amount of charge inside the sphereAn infinitely long, uniformly charged line of charge with linear density lamda = .1 C/m lies a distance of .68 m from the center of a sphere with radius .23 m, What is the amount of charge inside the sphere |

## What is the net force exerted on the trailerOn vacation, your 1250 kg car pulls a 540 kg trailer away from a stop light with an acceleration of 1.75 m/s2. What is the net force exerted on the trailer |

## What is the volume of the tankA storage tank at STP contains 19.5 kg of nitrogen (N2). What is the volume of the tank |

## What is the average force that the electron exerts on wallsAn electron moving in one dimension is confined between two walls seperated by a distance L = 10^-10 m. What is the average force that the electron exerts on the walls |

## What is the frictional force on the block from the planeA force acts on a block weighing 45N. The block is initially at rest on a plane inclined at angle θ = 18.0° to the horizontal. The positive direction of x axis is up the plane. |

## Find the oxygen concentration at the interior end of tubeInsects do not have lungs as we do, nor do they breathe through their mouths. Instead, they have a system of tiny tubes, called tracheae, through which oxygen diffuses into their bodies. find the oxygen concentration at the interior end of the tube |

## Determine how far apart are the slitsThe third-order fringe of 650 nm light is observed at an angle of 17° when the light falls on two narrow slits. How far apart are the slits |

## By how much has the volume decreased in litersA husband buys a helium-filled anniversary balloon for his wife. The balloon has a volume of 4.3L in the warm store at 76?F. By how much has the volume decreased in liters |

## What is the current in the heating elementA coffee-maker contains a heating element that has a resistance of 34 ohms. What is the current in the heating element |

## What would the period be on the moonA ball whose mass is 1.3 kg is suspended from a spring whose stiffness is 3 N/m. Suppose this apparatus were taken to the Moon, where the strength of the gravitational field is only 1/6 of that on Earth. What would the period be on the Moon |

## What is the maximum temperature reached18 g of helium gas are placed in a cylinder with a movable piston. The gas is compressed very slowly from a state of ( p1 = 5.5atm, v1 = 32.7 × 10^3 m3) to a state of (p2 = 17atm, v2 = 11 × 10^3 m3 ) |

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