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An interstellar spaceship is leaving Earth at a speed of %u03B2 = 0.548 for a deep space expedition. The captain tunes the onboard microwave radio transmitter to f0 = 2.01 GHz to send his reports back to Earth.
a) To which frequency should we tune our receivers on Earth to have the best reception?
b) 112 years later the mission is completed, the spaceship turns around and returns to Earth with the same speed. To which frequency should our grandchildren tune their radios to receive the captain's reports?
c) What is the arithmetic mean of the down-shifted and the up-shifted frequencies?
d) What is the geometric mean of the down-shifted and the up-shifted frequency?
Coin is placed 14.0 from the axis of the rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on turntable until a rate of 40.0 (revolutions per minute) is reached, at that point the coin s..
Two students with vibrating 440Hz tuning forks walk away from each other with equal speeds. How fast must they walk so that they each hear the frequency of 433 from the other fork.
Estimate the rms electric field in the sunlight that hits Saturn, knowing that the Earth receives about 1350 W/m2
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A 0.45kg mass is attached to a spring with a force constant of 21N/m and released from rest a distance of 3.6cm from the equilibrium position of the spring, How far is the mass from the equilibrium position
A rectangle measuring 30.0 {rm cm} by 40.0 {rm cm} is located inside a region of a spatially uniform magnetic field of 1.30 T, with the field perpendicular to the plane of the coil. The coil is pulled out at a steady rate of 2.00 {rm{ cm/s}} travelli..
Light from a helium-neon laser (?=633nm) is used to illuminate two narrow slits. What is the spacing (in mm) between the slits
At sea level, at latitude where, the pendulum that takes 2.00s for a complete swing back and forth has a length of 0.993m. What is the value of g in m/s2 at the location where the length of such a pendulum is 0.970m.
For the 4-particle system find the moment of inertia about the y-axis, that passes through the two masses on the left-hand side of the system.
A truck weighs four times as much as a car. if the truck coasts into the car at 12km/h and they stick together, what is their fimal velocity.
What are the displacement and velocity of the point on the cord. What is the magnitude of the acceleration of one of the liners toward the other because of their mutual gravitational attraction.
A sensitive gravimeter at a mountain observatory finds that the free-fall acceleration is 9.00×10?3m/s2 less than that at sea level
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