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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 gas sample enclosed in a rigid metal container at room temperature (20.0°C) has an absolute pressure p1. The container is immersed in hot water until it warms to 40.0°C. What is the new absolute pressure p2?
Calculate the y-component of the magnetic force. How fast must the candy bar travel to have the same joules in the form of kinetic energy.
A box 4kg being transported in the back of a truck that is accelerating forward at 2 . the box does not slide relative to the truck . the coefficient of static friction between the box and the truck bed is 0.5. what are the magnitude and direction..
a narrow slit is illuminated with light of wavelength 590 nm. a diffraction pattern is produced on a screen positioned
an electrically neutral thin square metal slab measuring 5.00 cm on a side is placed in a uniform external field that
Suppose the three resistors in the circuit have the values of R1=180 ohms, R2=300ohms, and R3=450 ohms, and that the emf of thebattery is 12.0 V.
a tennis player standing 12.6 m from the net hits the ball at 3.27deg above the horizontal. to clear the net the ball
a thin converging lens is found to form an image of a distant building 24 cm from the lens. if an object is placed 16 cm from the lens, how far from the object will the image be
The hunter uses a small powerboat that moves at a maximum speed of 9.5 km/h with respect to the water. Illustrate what is the minimum time necessary for crossing?
On a hot summer day, a young girl swings on a rope above the local swimming hole. what are the magnitude and direction of her velocity
When a surfer rides an ocean wave on her surfboard she is actually riding on. a. a crest that is toppling over. b. a trough of the wave. c. The rest position of the wave. d. A region of rarefaction.
a sphere with constant velocity passes through a photogate. determine the speed of the sphere as it passes through the
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