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If you move towards an emitter of yellow light (λ =580nm) at half the speed of light, find what wavelength would you observe? Determine what would be the answer if the emitter moved towards you?
The only forces acting on a body have magnitudes of 20 N and 35 Nand directions that differ by 80 degrees. What is the approximate mass of the body
A 20lb weight is suspended from the end of a vertical spring of negligible mass. This much weight stretches the spring by 6nches. It is then pulled 2 inches down and released.
A person running a fever has a temperature of 39.6°C. What is this temperature on the Fahrenheit scale
A block (m = 3 kg) is sitting on a horizontal frictionless table. A spring (k = 500 N/m) is mounted at the side of this block so that when the block is used to compress the spring, with what velocity does it slide across the table
A 0.30-kg puck, initially at rest on a frictionless horizontal surface, is struck by a 0.20-kg puck that is initially moving along the x-axis with a velocity of7.1 m/s. Find the fraction of kinetic energy lost in the collision
Starting from rest, a constant force F = 100 N is applied to the free end of a 45-{\rm m} cable wrapped around the outer rim of a uniform solid cylinder, How Long does it take the cable to unwrap
An isolated hydrogen atom possesses a hyperfine interaction between the proton and electron spins (Sp and Se) that takes the form ASp*Se. The two patricles have magnetic moments αSp and βSe, and the entire system is in a unifrom magnetic field B. ..
What must be the thickness of the liquid layer if normally incident light with? = 504 nm in air is to be strongly reflected
A 3.04 μF capacitor and a 7.84 μF capacitor are connected in series across a 17.0 V battery. What voltage would be required to charge a parallel combination of the same two capacitors to the same total energy?
A block, mass m, slides down a ramp inclined 27 degrees above the horizontal. Calculate the speed of the block if it begins at rest
A golf ball of mass 0.050 kg is at rest on the tee and has a velocity of 102 m/s immediately after being struck. what was the club velocity before the collision
A mass m = 4.5 kg hangs on the end of a massless rope L = 2.01 m long. The pendulum is held horizontal and released from rest. What is the magnitude of the tension in the string at the bottom of the path
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