A 60 kg explorer lands on Planet X, where the gravitational acceleration is 10.5 m/s2. The radius of the planet is 7.91 x 107 m. What is her weight on this planet in Newtons

Find the radius of the star rigel and the bright blue star : Find the radius of the star Rigel, the bright blue star in the constellation Orion that radiates energy at a rate of 2.7*10^32W and has a surface temperature of 11,000K . Assume that the star is spherical. Use 5.67*10^-8W/m^2*K^4 for the Stefan-Bo.. |

Constant temperature difference and consider conduction only : A large window measures 1.8m by 3.2m . At what rate will heat be conducted through the window when the room temperature is 27C and the outside temperature is 0C if the window consists of a single pane of glass 4.4mm thick. (Assume that there is a con.. |

A steel cylinder of radius : A steel cylinder of radius 5.0cm and length 5.0cm is placed in end-to-end thermal contact with a copper cylinder of the same dimensions. If the free ends of the two cylinders are maintained at constant temperatures of 85 C (steel) and 23 C (copper), .. |

Mechanical advantage is the ratio of the force required : Mechanical advantage is the ratio of the force required without the use of a machine (sometimes very simple machine) to that needed when using the machine. |

What is her weight on this planet in newtons : A 60 kg explorer lands on Planet X, where the gravitational acceleration is 10.5 m/s2. The radius of the planet is 7.91 x 107 m. What is her weight on this planet in Newtons |

Water drips from the nozzle of a shower onto the floor : Water drips from the nozzle of a shower onto the floor 235 cm below. The drops fall at regular (equal) intervals of time, the first drop striking the floor at the instant the fourth drop begins to fall. Find the location of the third drop as measured.. |

Center of curvature of the curve : As your bus rounds a flat curve at constant speed, a package with mass 0.300 kg , suspended from the luggage compartment of the bus by a string 50.0 cm long, is found to hang at rest relative to the bus, with the string making an angle of 30.0 degree.. |

Create artificial gravity in a space station is to spin it : Artificial gravity. One way to create artificial gravity in a space station is to spin it. If a cylindrical space station 275 m in diameter is to spin about its central axis, at how many revolutions per minute (rpm) must it turn so that the outermost.. |

Communications satellites are used to bounce radio waves : Communications satellites are used to bounce radio waves from the earth's surface to send messages around the curvature of the earth. In order to be available all the time, they must remain above the same point on the earth's surface and must move.. |

## What is the terminal speed at which the bar fallsWhat is the terminal speed at which the bar falls. |

## The elevator is moving downward at constant speedFor each of the following situations, evaluate whether the relationship between the given force is less than, greater than, equal to, or can't tell and explain why that would be the case. The elevator is moving downward at constant speed. |

## 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 type of objects emit at your selected regionSelect one of the following regions of the electromagnetic spectrum: radio wave, infrared, ultraviolet, X-ray, Gamma rays. What type of objects emit at your selected region |

## Find the energy of photon emitted as a result of transitionA hydrogen atom in a state having a binding energy (the energy required to remove an electron) of 0.544 eV makes a transition to a state, What is the energy of the photon emitted as a result of the transition |

## What is the rotational kinetic energy of mars on its axisMars has a mass of 6.42 1023 kg and a radius of 3.40 106 m. Assume it is a uniform solid sphere. The distance of Mars from the Sun is 2.28 1011 m. What is the rotational kinetic energy of Mars on its axis |

## What is the new momentum of the puckWhat is the new momentum of the puck. What is the length of pipe. |

## Find the speed of the spools ground-touching pointA spool whose inner core has a radius of 1.00 cm and whose end caps have a radius of 1.50 cm has a string tightly wound around the inner core. What is the speed of the spool's ground-touching point |

## Calculate the wavelength of radiation produced by a protonAccelerating charges radiate electromagnetic waves. Calculate the wavelength of radiation produced by a proton in a cyclotron with a radius of 0.500 m |

## Write an equation for the radial electric fieldA hollow non-conducting spherical shell has inner radius R1 = 8 cm and outer radius R2 = 15 cm. a) Write an equation for the radial electric field in the region r |

## What is the current if the wire is half this lengthHow long must a 0.70-mm-diameter aluminum wire be to have a 0.48A current when connected to the terminals, What is the current if the wire is half this length |

## Doubly ionized carbon atom is located at the originA doubly ionized carbon atom (with charge 2e) is located at the origin of the x axis, and an electron (with charge -e) is placed at x = 7.26 cm. There is one location along the x axis at which the electric field is zero. Give the x coordinate of this.. |

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