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A cubical piece of heat-shield-tile from the space shuttle measures 0.15 m on a side and has a thermal conductivity of 0.065J/(s·m·C°). The outer surface of the tile is heated to a temperature of 1240°C, while the inner surface is maintained at a temperature of 21°C.
a) How much heat flows from the outer to the inner surface of the tile in4.0 minutes?
b) If this amount of heat were transferred to 2.2 liters (2.2 kg) of liquid water, by how many Celsius degrees would the temperature of the water rise?
A 510 kg satellite is in a circular orbit regarding the Earth at a height above the Earth equal to the Earth's mean radius. Discover the satellite's orbital speed. Find the period of its revolution.
What is the vertical force on the support closest to the piano.
A particle with charge q moves in a circular orbit around the origin with radius a in the xy-plane with constant angular velocity omega. At t = 0 the particle sits at the point (a, 0).
The currents in household wiring and power lines alternate at a frequency of 60.0 Hz. What is the wavelength of the EM waves emitted by the wiring
If the rubber of the balloon itself has a mass of 2.00 g and the balloon is filled with helium, calculate the net upward force (the "lift") that acts on it in air
A beam of electrons is first accelerated (from rest) through a region of electric potential difference V=10 keV and then made to go through a slit of width a. What is the value of the momentum (px) of each electron
A cosmic-ray proton in interstellar space has an energy of 21.5 MeV, What is the magnetic field in that region of space
occasionally an asteroid will break into fragments due to a collision. these fragments can leave the atsteroid belt and
question a rectangular piece of paper is folded so that one corner lands on the opposite corner. the crease is as long
the current in the windings of a toroidal solenoid is 2.400 a. there are 500 turns and the mean radius is 25.00 cm. the
A wire of length L = 15 is bent into a semi circle . If the total charge on the wire is -45nC, determine the electric field at the center point of the semicirlce.
A grating has exactly 8000 lines uniformly spaced over 2.58 cm, What is the expected angle for the third-order maximum of the green line
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