A wheel is rotating freely at angular speed 490 rev/min on a shaft whose rotational inertia is negligible. A second wheel, initially at rest and with 5 times the rotational inertia of the first, is suddenly coupled to the same shaft. (a) What is the angular speed of the resultant combination of the shaft and two wheels? (b) What fraction of the original rotational kinetic energy is lost?

What is the average emf produced across the soil : A loop of 25 turns of wire and radius 15 cm is placed perpendicular to a magnetic field of .4T. what is the average EMF produced across the soil |

Explain the reaction to be faster at the higher temperature : If you did reaction of zinc with 6 M HCl at 20C and at 50C. should you expect the reaction to be faster at the higher temperature. how much faster |

Find what is the radius of the path traveled : A proton (m = 1.672 X 10^-27kg, q= 1.6 X 10^-19 c) is accelerated through an electric potential of 95 volts and enters a region perpendicular to a magnetic field of .62T |

Explain what happen when the manganese dioxide mno2 added : What would happen when the manganese dioxide MnO2 was added to the peroxide solution. why did this occure |

A wheel is rotating freely at angular speed : A wheel is rotating freely at angular speed 490 rev/min on a shaft whose rotational inertia is negligible. A second wheel, initially at rest and with 5 times the rotational inertia of the first, is suddenly coupled to the same shaft. (a) What is the .. |

Calculate the speed of the fluid as it leaves the hole : A container of cross-sectional area 102 cm2 contains liquid of density 1.95 g/cm3 to a height of 6.60 cm above a small hole of area 1.00 cm2 in the side. Find the speed of the fluid as it leaves the hole |

The left arm of the tube has cross-sectional area : Mercury is poured into a U-tube as shown in Figure (a). The left arm of the tube has cross-sectional area A1 of 11.0 cm2, and the right arm has a cross-sectional area A2 of 4.60 cm2. |

Determine the total energy density within the pulse : A laser pulse has an energy of 19 J and a beam radius of 2 mm. The pulse duration is 9 ns and the energy density is constant within the pulse. What is the total energy density within the pulse |

Angular speed of the lazy susan after the cockroach stops : A Texas cockroach of mass 0.189 kg runs counterclockwise around the rim of a lazy Susan (a circular disk mounted on a vertical axle) that has a radius 10.2 cm, rotational inertia 3.61 x 10-3 kg·m2, and frictionless bearings. |

## Find your average velocity for the tripYou drive west at 70km/h for 24 min , then follow a road that goes 38 degrees south of west, driving at 96 km/h for another 36 min. Find your average velocity for the trip |

## Compute the total resistance of the circuitThree 45 ohm lightbulbs and three 75 ohm lightbulbs are connected in series. what is the total resistance of the circuit |

## Find the linear acceleration of the rim of the bicycle wheeA bicycle has wheels with a diameter of 0.680 m. It accelerates uniformly and the rate of rotation of its wheels increases from 211 rpm to 280 rpm in a time of 28.9 s. Find the linear (tangential) acceleration of the rim of the bicycle's wheels.. |

## What is the mean number density of galaxiesGalaxy mergers in a rich cluster could impede their use as standard candles over time as they tend to brighten. What is the mean number density of galaxies within the half mass radius |

## What was the original temperature of the panA 750 g aluminum pan is removed from the stove and plunged into a sink filled with 10.0 liters of water at 20.0 ° C. What was the original temperature of the pan |

## Obtain how much charged has flowed during lightning boltIn a lightning bolt, a large amount of charge flows during a time of 2.9 x 10-3 s. Assume that the bolt can be represented as a long, How much charged has flowed during the lightning bolt? |

## Question1a concave mirror is made by coating the innerquestion1a concave mirror is made by coating the inner surface of a segment of a spherical shell with a reflecting |

## Determine the minimum work required of the hikerA 62kg hiker starts at an elevation of 1500m and climbs to the top of a 3500m peak, What is the minimum work required of the hiker |

## Estimate the maximum compression of the springA bullet with mass 20 grams and velocity 100 m/s collides with a wooden block of mass 2kg. What is the maximum compression of the spring |

## What is the magnitude of the counter clockwise forceA laboratory ultracentrifuge is designed to produce a centripetal acceleration of 5.0 x 10^6 g at a distance of 4.00cm from the axis. What angular velocity in rev/min is necessary. |

## Determine the magnetic field inside the solenoidA 43.0 mA current is carried by a uniformly wound air-core solenoid with 425 turns, a 11.5 mm diameter, and 12.5 cm length. Compute the magnetic field inside the solenoid |

## What are the values of the preceding four quantitiesA 6.50?Fcapacitor that is initially uncharged is connected in series with a 4500resistor and a 505 V emf source with negligible internal resistance. A long time after the circuit is completed (after many time constants), what are the values of the .. |

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