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A gamma-ray telescope intercepts a pulse of gamma radiation from a magnetar, a kind of star with a spectacularly large magnetic field. The pulse lasts 0.16 s and delivers 9.5 x10-6 J of energy vertically to the 59-m2 surface area of the telescope's detector. The magnetar is thought to be 3.32 x 1020 m (about 35000 light-years) from mearth, and to have a radius of 9.7 x 103 m. discover the magnitude of the rms magnetic field of the gamma-ray pulse at the surface of the magnetar, assuming that the pulse radiates uniformly outward in all directions. (Suppose a year is 365.25 days.)
a calculate the shear modulus g of 1040 carbon steel.b using the shear modulus value calculated in part a calculate the
The intensity of the sound wave from a jet airplane as it is taking off is 105 W/m2 at a distance of 3.2 m. What is the intensity of the sound wave
A ball is thrown straight upward and returns to the thrower's hand after 2.50 s in the air. At what speed must the second ball be thrown
if a plywood box designed to store an unmanned air vehicle has length-width-height dimensions of 3.0 x 2.0 x 1.0 ft and
A standing observer perceives a train whistle to have a frequency of 300 Hz. what is the frequency of the sound waves emitted from the train
The isotope shift of spectral lines refers to the shift in wave-lengths (or frequencies) due to the different masses of given ele-ments. Find the isotope shifts for each of the four visible Balmer series wavelengths for deuterium and tritium compared..
An electric motor with 3W of power is used to lift a .2 kg mass a height of .5 meters in 3.0 seconds
A 67-kg skier is going down a 31 ° slope. The area of eachski in contact with the snow is 0.19 m2. Determine the pressure that each ski exerts on the snow
what is the horizontal distance x between the two balloons.
even as Jo moves off in the opposite direction at a speed of 1.27m/s. assuming that friction is negligible, find out Al's mass.
X rays diffract from a crystal in which the spacing between atomic planes is 0.168 nm. The second-order diffraction occurs at 46.0. What is the angle of first-order diffraction
A 15.0 kg bucket of water is suspended by a ropewrapped around a windless, that is a solid cylinder 0.500 m indiameter with mass 11.0 kg. With what speed does the bucket strike the water
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