A woman on a rocket traveling at 0.82c (with respect to Earth) observes a meteor come from in front of her and pass her at 0.85c. How fast is the meteor moving with respect to Earth?

Calculate is and the current i for v for a pn junction : Calculate Is and the current I for V = 700 mV for a pn junction for which Na = 1017 / cm³, Nd = 1016 / cm³, A = 200 µm², ni = 1.5 x 10^10 / cm³, Lp = 5 µm, Ln = 10 µm, Dp = 10 cm² / s, and Dn = 18 cm² / s |

What are the days sales in receivables : A firm has $28,700 in receivables and $165,600 in total assets. The total asset turnover rate is 1.85 and the profit margin is 7 percent. What are the days' sales in receivables? |

Define what is the mass of helium if it filled a square room : What is the mass (in kg) of helium if it filled a square room if the room has walls that are 9.5 feet high and 9.5 long and the density of helium is 0.18 g/L |

Why depletion layer exists mostly on shallowly doped side : In a pn junction for which Na >> Nd, and the depletion layer exists mostly on the shallowly doped side with W = 0.3 µm, find Vo if Nd = 10^16 / cm³. Also calculate Qj. |

How fast is the meteor moving with respect to earth : A woman on a rocket traveling at 0.82c (with respect to Earth) observes a meteor come from in front of her and pass her at 0.85c |

What is the magnitude of the total acceleration : A platform is rotating with an angular speed of 3.00 rad/s and an angular acceleration of 11.0 rad/s2. what is the magnitude of the total acceleration a |

Design a 2 bit up-down counter using 2 d flip flops : design a 2 bit up/down counter using 2 d flip flops and gates such that a direction bit set to 0 causes a count up and the same "direction bit" set to 1 causes a count down. show state diagram, state table and circuit |

Explain what is the mass of a cube of aluminum : What is the mass (in g) of a cube of aluminum (density = 2.702 g/mL) with an edge length of 0.27 feet |

Determine the intensity of the starlight at the earth : Consider a bright star in our night sky. Assume its distance from Earth is 89.4 light-years (ly) and its power output is 4.00 multiply.gif 1028W, Find the intensity of the starlight at the Earth |

## Determine the field strength inside the coilA solenoid (coil) has a radius of 7.2 cm, a length of 31.5 cm, and has 380 turns of wire. A current of 350 mA runs through the coil. Calculate the field strength inside the coil |

## Find the speed of transverse waves on this stringOne of the 57.5cm -long strings of an ordinary guitar is tuned to produce the note B3(frequency 245 Hz) when vibrating in its fundamental mode. Find the speed of transverse waves on this string |

## How much energy is emitted by the blackbodyHow much energy is emitted by the blackbody, How much energy is emitted by the blackbody at all wavelengths in one hour |

## Compute the total amount of heat energyThe bones of a saber-toothed tiger are found to have an activity per gram of carbon that is 14.70 of what would be found in a similar live animal. How old are these bones. |

## How much time would it takeA person walks up a stalled 14 m long escalator in 81 s. When standing on the same escalator, now moving, the person is up in 48 s. How much time would it take that person to walk up the moving escalator? |

## What is the speed of the arrow as leaves the bowWhat is the speed of the arrow as it leaves the bow? |

## What if the force were attractiveYou are driving to the grocery store at 20. You are 100 from an intersection when the traffic light turns red. Suppose that your reaction time is 0.70 and that your car brakes with constant acceleration. What acceleration would bring you to rest r.. |

## Calculate the quantum number for the pendulumThe maximum horizontal displacement of the pendulum bob from equilibrium is 3.00 cm. Calculate the quantum number n for the pendulum |

## Find the magnification of the microscopeA microscope uses an eyepiece with a focal length of 1.65 cm . Using a normal eye with a final image at infinity, What is the magnification of the microscope |

## What is the charge on blockAn airplane whose air speed is 608 is supposed to fly in a straight path 38 north of east. But a steady 86 wind is blowing from the north. In what direction must the plane head. |

## Calculate the charge on each capasitorA 0.50-?F and a 1.4-?F capacitor (C1 and C2, respectively) are connected in series to a 14-V battery. Calculate the charge on each capasitor assuming the two capacitors are in parallel |

## Find the maximum value of the force acting on the barA conducting bar rests on two parallel horizontal rails 50 cm apart forming a square area. The resistance of the bar and the rails is assumed to be constant and equal to 0.05 ??. What is the maximum value of the force acting on the bar during that .. |

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