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The density of matter in interstellar space is approx. one electron and one proton per cubic centimetre. What is the limit on the frequency of electromagnetic radiation that can be propagated through such a medium by minimal attenuation?
A space station has a diameter of 1000 ft (300 m) and to rotate at a rate sufficient to cause occupants in the outer rings to experience a centripetal force roughly equal to the gravitational force of the moon
Illustrate what is the magnitude of the apparent weight of a 79 kg astronaut 5100 km from the center of the Earth's Moon in a space vehicle moving at constant velocity?
The carbon isotope 14-C is used for carbon dating of archeological artifacts. What is the recoil speed of the nucleus
A box of unknown mass begins at the base of a 30 degree ramp with an initial velocity of 10.0 m/s. calculate the maximum distance up the ramp which the box will reach
A small rubber wheel on the shaft of a bicycle generator presses against the bike tire, What is the peak emf produced by the generator at the end of 4.64 s
A bound quantum system has a complete set of orthonormal, no-degenerate energy eigenfunctions u(subscript n) with difference energy eigenvalues E(subscript n). The operator B-hat corresponds to some other observable and is such that:
A spinning flywheel has rotational inertia I = 401.0 kg · m2. Its angular velocity decreases from 20.4 rad/s to zero in 261.6 s due to friction
The water is near freezing in temperature. Typically a human can only swim in such water for about 300 seconds (or 5 minutes) before hypothermia sets in. Calculate the time the explorer spends in the water
A particle of mass m in an infinite well has its initial wavefunction ψ (x,0) = A[ψ1(x) +ψ3(x)] where ψ1(x) and ψ3(x) are stationary states. The boundaries of the well are x = 0 and x = a.
A 20kg sled, initially at rest, slides down a hill, which is 20m tall. what is the speed of the sled at the bottom of the hill
A uniform electric field exists in the region between two oppositely charged parallel plates 1.67cm apart, Find the speed of the proton at the moment it strikes the negatively charged plate
a solenoid 30.0 cm long and with a cross-sectional area of 0.600 cm2 contains 460 turns of wire and carries a current
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