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An observer moving at a speed of 0.995c relative to a rod measuresits length to be 1.90m and sees its length to be oriented at 25.00degrees with respect to the direction of motion.
a) What is the proper length of the rod? (in meters)
b) What is the orientation angle in a reference frame movingwith the rod? (in degrees)
Two equally charged particles, held 4.7 × 10-3 m apart, are released from rest. The initial acceleration of the first particle is observed to be 7.2 m/s2, find the mass of the second particle
a person's reaction time is generally not quick enough to allow the person to catch a dollar bill dropped between the fingers. If a typical reaction time in this case is 0.25 s
Ball 1, with a mass of 140g and traveling at 11.0m/s , collides head on with ball 2, which has a mass of 310g, What are the final velocities of each ball if the collision is perfectly inelastic
An isolated copper sphere of radius 3.00cm, initially uncharged, is illuminated with ultraviolet light of wavelength 180nm. what charge does the photoelectric effect induce on the sphere
An unknown material has a normal melting/freezing point of -20.6 °C, and the liquid phase has a specific heat capacity of 143 J/(kg C°). What is the latent heat of fusion of the unknown material
A flight attendant pulls her 63N flight bag a distance of 312m along a level airport floor at a constant velocity. The force she exerts is 39N at the angle of 59° above the horizontal.
A figure skater is spinning at a rate of 1.0 rev/s with her armsout stretched. What is her new rate of rotation
A rocket is lauchned upward with a velocity of 3m/s. How long does it take to reach the top of its trajectory
A parallel plate capacitor constructed of two disks spaced 2.0 mm apart and is charged to a potential difference of 500V. What is the farthest distance from the negative plate
Illustrate what current through the wire, and in which direction(LtoR OR R to L)will allow the wire to float in the magnetic field.
Three moles of an ideal gas undergo a reversible isothermal compression at 21.5°C. During this compression, 1870 J of work is done on the gas. What is the change of entropy of the gas?
When a high-power laser is used in the Earth's atmosphere, the electric field associated with the laser beam can ionize the air, What laser beam intensity will produce such a field
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