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Consider electrons accelerated to a total energy of 20.0 GeV in the 3.00-km-long Stanford Liinear Accelerator. (a) What is the factor ? for the electrons? (b) What is the electrons' speed at the given energy? (c) What is the length of the accelerator in the electrons' frame of reference when they are moving at their highest speed?
Two pieces of optically flat glass (n = 1.50) touch at one edge and a separated by a thin stretched fiber at the opposite edge. Light of wavelength 500 nm is shone from above and 100 dark fringes are counted. How thick is the fiber?
an ideal physics text with a mass of 2.5g is placed on a rough incline. The coefficients of static and kinetic friction are .3 and .2 respectively. what is the magnitide of the acceleration of the text
The radius of a black hole is the distance from the black hole's center at which the escape speed is the speed of light. What is the radius of a black hole with a mass five times that of the Sun
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. Find the speed of the wagon after the rock is thrown (a) directly forward in one case and (b) directly backward in another
A person doing a chin-up weighs 655 N exclusive of the arms. During first 15 cm of the lift, each arm exerts an upward force of 355N on the torso. If the upward movement starts from rest, what is the person's velocity at this point.
A cubic centimeter in a typical cumulus cloud contains 50 to 500 water drops that have a typical radius of 10µm. For that range, give the lower value and the higher value, respectively, for the following.
By how much does a 10-cm-thick layer of glass wool insulation decrease the heat loss through the roof of a house (area 100 m2, Rf = 0.15 m2K/W for the roof alone, Rf = 2.5 m2K/W for 10-cm-thick glass wool)
The fastest martial arts punch is 43.3 mph (69.6 km/h) and was achieved by John Ozuna (United States), How much force was generated by his punch
A 7 kg ball is lifted from the ground to a height of 45 meters above the ground. The ball is then dropped. After the ball has fallen 5.5 m, what is it's PE and KE and how fast is it going?
A woman with mass 49.5 kg is standing on the rim of a large disk that is rotating at 0.490 rev/s about an axis perpendicular to it through its center. Calculate the magnitude of the total angular momentum of the woman-plus-disk system
What is velocity of wind that is moving the plane
A monatomic ideal gas containing 7.95 moles at a temperature of 235 K are expanded isothermally from a volume of 1.23 L to a volume of 4.44 L. Calculate the heat flow into or out of the gas
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