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Suppose a news report stated that starship Enterprise had just returned from a 5 year voyage while traveling at 0.81c.
(a) If the report meant 5.0 years of Earth time, how much time elapsed on the ship?
years
(b) If the report meant 5.0 years of ship time, how much time passed on Earth?
A 1.86- sound wave travels through the pregnant woman's abdomen and is reflected from the fetal heart wall of her unborn baby. The heart wall is moving toward the sound receiver as heart beats. The reflected sound is after that mixed with the transmi..
A parallel-plate capacitor is formed from two 9.10cm x 9.10cm electrodes spaced 2 mm apart. The electric field strength inside the capacitor is 5.00*10^6 . What is the charge (in nC) on each electrode ?What is the final velocity of the electron.
Radiation falling on a perfectly reflecting surface produces an average pressure p. what is the pressure at that surface in terms of p
A lighthouse that rises 49 above the surface of water sits on a rocky cliff that extends 19 from its base. A sailor on the deck of a ship sights the top of the lighthouse at the angle of 30.0 above the horizontal.
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?
A father racing his son has 1/4 the kinetic energy of the son, who has 1/3 the mass of the father. The father speeds up by 1.5 m/s and then has the similar kinetic energy as the son.
An old hunting weapon was a rock on the end of a string. The hunter would swing the rock in horzontal circles and then throw it. If the rock had a mass of 2 kg and the 2 m long string breaks when the tension is 60N.
A 1.5kg ball and a 3.0kg ball are connected by a 3.0m long rigid, massless rod. What torque will bring the balls to a halt
What is the angular velocity of the disk. If a single bit requires 5 µm of length along the motion direction, how many bits/second can the writing head write when it is 3.0 cm from the axis? display all work and explanations.
A light beam with wavelength 440. nm in a material then enters air and its wavelength becomes 577. nm. What is the index of refraction for the material
Humid air breaks down in a sufficiently strong electric field, What is the magnitude of the electrostatic force for an electron and for an ion with a single electron missing
A beam of neutral hydrogen atoms with a speed of 104 m/s along the x-axis enters a 1 m long region, compute The acceleration of the atoms while in the magnetic field region
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