Calculate the average density of a red giant star in grams per cubic centimeter. Take the star's mass to be 2*10^33 gm and its radius to be 3*10^12 cm. How does this density compare with that of the air we breathe (about 10^-3 gm/cm3)?

An uninsulated thin-wall pipe : An uninsulated thin-wall pipe of 75 mm diameter is used to transport water at a temperature of 3?C to an outdoor cooling towe |

Calculate for each product the full cost and selling price : A business manufacturers refrigerators for domestic use. There are 3 models: Lo, Mid and Hi. The models, their quality and their price are aimed at different markets. Product costs are computed on a blanket (businesss-wide) overhead rate basis usi.. |

How much work must the spacecraft engines perform : A 2590-kg spacecraft is in a circular orbit 2720 km above the surface of Mars. How much work must the spacecraft engines perform to move the spacecraft to a circular orbit that is 4480 km above the surface |

Calculate the doppler shift of x rays : Calculate the doppler shift of x rays emitted from shocked silicon in a supernova remnant of the ejected material is moving at 5000 km/sec |

Calculate the average density of a red giant star : Calculate the average density of a red giant star in grams per cubic centimeter. Take the star's mass to be 2*10^33 gm and its radius to be 3*10^12 cm |

Evaluate the number of si atoms in one unit cell : Crystalline silicon has a cubic structure. The unit cell edge length is 543pm. The density of the solid is 2.33g/cm3. Calculate the number of Si atoms in one unit cell. |

Using marcia identity statuses : A major social change in the last 20 years is in the number of adolescents who are part of the labor force while still attending school. During the 1978-1979 school year, over two-thirds of all 16- and 17-year-old students in the United States.. |

Compute the density of metallic aluminum : When aluminum crystalizes, it forms face-centered cubic cells. The atomic radius of an Al atom is 143. Caluculate the density of metallic aluminum. |

Find the emf in the loop as a function of time : A uniform magnetic field B is perpendicular to the plane of a circular loop of radius r. Find the emf in the loop as a function of time |

## Determine the position of the gps satelliteDetermine the position of the GPS satellite relative to and from the center of the earth and ratio of clock rates on a GPS clock in orbit and one on the surface of the earth. |

## What percent of his total kinetic energy is rotationalWe can roughly model a gymnastic tumbler as a uniform solid cylinder of mass 72.0kg and diameter 1.20m. What percent of his total kinetic energy is rotational |

## At what speed will the water strike the buildingA fireman d = 59.0 m away from a burning building directs a stream of water from a ground- level fire hose at an angle of ?i = 29.0° above the horizontal, at what speed will the water strike the building |

## What is the electric flux through the rectangleA 5.70 cm x 3.10 cm rectangle lies in the xy-plane, What is the electric flux through the rectangle if E = (50.0 i-hat + 60.0 k-hat) N/C |

## What is the half-life of the sampleAn investigator collects a sample of a radioactive isotope with an activity of 4.4×105Bq . 72hourslater, the activity is 1.2×105Bq. What is the half-life of the sample |

## Find the velocity of the center of mass of the systemA bumper car with mass m1 = 102 kg is moving to the right with a velocity of v1 = 4.9 m/s. A second bumper car with mass m2 = 90 kg is moving to the left with a velocity of v2 = -3.3 m/s, What is the velocity of the center of mass of the system |

## What was the paths resistanceA heart defibrillator passes 11.0 A through a patient's torso for 5.00 ms in an attempt to restore normal beating, What was the path's resistance? |

## How far is the trip according to youSirius is about 9.0 light-years from Earth. How far is the trip according to you, To reach the star by spaceship in 16 years (ship time), how fast must you travel |

## Tarzan swings through the jungle by hanging from a vineTarzan swings through the jungle by hanging from a vine. Immediately after he steps off the branch, is Tarzan's acceleration zero or nonzero |

## How fast does the airplane moveAn airplane moves at 120 m/sec to the west with respect to the air. How fast does the airplane move |

## What must the potential difference between the platesWhat should be the spring constant of a spring designed to bring a 1400 car to rest from a speed of 95 so that the occupants undergo a maximum acceleration of 5. |

## Compute the electrostatic potential energy of the systemA small spherical lump of conductor, with a radius R = 0.1m, has a charge of 0.01 C placed on it. Compute the electrostatic potential energy of the system |

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