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Question1
An observer moving at a speed of 0.995c relative to a rod measures its length to be 2.00 m and sees its length to be oriented at 30.0° with respect to direction of motion.
(a) What is proper length of the rod?
(b) What is orientation angle in the rest frame?
Question2
As skiing in Jackson, Wyoming, your friend Ben (of mass 82 kg) started his descent down the bunny run, 17 m above the base of the run.
If he started at rest and changed all of his gravitational potential energy into kinetic energy, what is the Ben's kinetic energy at the bottom of bunny run?
Question3
A rectangular block of copper has sides of length 12 cm, 16 cm, and 34 cm. If block is connected to a 7.0 V source across two of its opposite faces of the rectangular block, what are currents that the block can carry?
Two 2.40cm--diameter disks spaced 1.90mm apart form a parallel-plate capacitor. determine the electron's speed as it left the negative plate
What minimum force is necessary to start the block moving up the wall? (Hint: The static frictional force is now directed down the wall.)
A 55-kg mass ice skater standing stationary on very slipper ice (negligible friction) throws a 0.45 kg baseball with a speed of 27 m/s in the horizonatal direction
A 13.5?F capacitor is connected to a power supply that keeps a constant potential difference of 26.0V across the plates. How much energy is stored in the capacitor before the dielectric is inserted
An object is 22 cm in front of a diverging lens that has a focal length of -13 cm. How long in front of the lens should the object be placed so that size of its image is reduced by a factor of 4.
At time t= 0, a 2150-kg spacecraft in outer space fires an engine that exerts anincreasing force on it in the +x-direction. What impulse does the engine exert on the spacecraft during the 1.5 s interval starting 2.0 s afte..
A 20 kg piece of steel pipe that is 20 cm in diameter, 80 cm long, What is its angular velocity and its total kintetic energy
what is the resolving power of a microscope (lamda = 550 nm) with a 5-mm-diameter objective which has focal point of= 9mm
On a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. What are the magnitude and direction of the velocity of the red glider after the collision
Changes in wind and tide made average speed on return trip 3 mph slower than the speed on the way out. If the total time of the trip took 9 hours find speed of both the going and the return trip.
Jim's dog Sparky runs 45.0 northeast to a tree, then 75.0 west to a second tree, and finally 15.0 south to a third tree. Calculate the direction of Sparky's net displacement
Find out the critical angle theta_ce for e-waves in calcite. The index of refraction for light with electric field parallel to the optical axis (called extraordinary waves or e-waves) is 1.4864. The index of refraction for light with electric fiel..
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