To decrease the body temperature of a 66-kg person by 1.0 C , what mass of alcohol must be evaporated from the person's skin? Ignore the heat involved in raising the temperature of alcohol to its boiling point (why?) and approximate the human body as water. Express your answer using two significant figures.

A wheel is rotating about an axis : A wheel is rotating about an axis that is in the z-direction. The angular velocity is at , increases linearly with time and is at . We have taken counterclockwise rotation to be positive. |

Find the final speed of both pucks : Two pucks, A and B, are on an air hockey table. Puck A is moving with an initial velocity of 5.5m/s Eastward and Puck B is at rest and East of Puck A. Find the final speed of both pucks |

Explain the molar solubility in water be the same as hcl : For which of the following substances will the molar solubility in water be the same as that in an HCl or NH3 solution |

Determine what is the efficiency of the solar cell : A solar cell has a light-gathering area of 10 cm2 and produces 0.2 A at 0.8 V (DC) when illuminated with S = 1000 W/m2 sunlight. What is the efficiency of the solar cell |

To decrease the body temperature : To decrease the body temperature of a 66-kg person by 1.0 C , what mass of alcohol must be evaporated from the person's skin? Ignore the heat involved in raising the temperature of alcohol to its boiling point (why?) and approximate the human body as.. |

System when the stick is pivoted about axis perpendicular : A particle of mass 0.450 kg is attached to the 100-cm mark of a meter stick of mass 0.125 kg. The meter stick rotates on a frictionless, horizontal table with an angular speed of 2.00 rad/s. |

Find the work done by the machine : A machine does work at a rate given by Pct^2 , where c = 15W/s^2 and t is time. Find the work done by the machine between 15s and 20s? huh |

What is the speed at the bottom of the hill : a hoop of mass M=2 kg and radius R=0.4 m rolls without slipping down a hill. what is the speed Vfinal at the bottom of the hill |

Find the atoms maximum speed : An atom in a solid vibrates at 10THz with amplitude 10pm. Find the atom's maximum speed |

## Find the magnitude of the resulting magnetic fieldA sphere of radius R is uniformly charged to a total charge of Q. It is made to spin about an axis that passes through its center with an angular speed ω. Find the magnitude of the resulting magnetic field at the center of the sphere. |

## Find the equivalent resistanceA resistor is in the shape of a cube, with each side of resistance R . Find the equivalent resistance between any two of its adjacent corners. |

## What is the electric field at the locationQuestion: Field and force with three charges? What is the electric field at the location of Q1, due to Q 2 ? |

## What is the maximum displacement of the bridge deckWhat is the maximum displacement of the bridge deck? |

## What is the magnitude of the current in the wireWhat is the magnitude of the current in the wire as a function of time? |

## Introductory mechanics: dynamicsCalculate the smallest coefficient of static friction necessary for mass A to remain stationary. |

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