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A student at the top of a building throws a ball straight upward with an initial speed v0. Then he throws a second ball straight downward with the same initial speed as the first. How do the final velocities of the balls compare when they reach the ground? (which is greater or are they equal?)
Two balls attached to strings have the same mass and volume, but are made of different materials. Which ball exerts a greater net force on the block
An ideal gas initially at 324 K is compressed at a constant pressure of 27 N/m2 from a volume of 3.0m3 to a volume of 1.8m3. what is the final temperature of the gas
At a particular instant a proton is traveling in the -y direction, with speed 4105 m/s. What is the magnitude of the magnetic force on the proton
Consider an electron moving with a speed of 8.60 106 m/s at right angles to a constant magnetic field, with B = 1.9 T
A skier traveling 11.2 m/s reaches the foot of a steady upward 15.8° incline and glides 10.9 m up along this slope before coming to rest
The time-varying current in an LC circuit where C = 11.5?F is given by i(t) = (1.30 A) sin (1230t), where t is in seconds.
A 110-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 370N. What is the final speed of the crate
A 49.2-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.637 and 0.439, respectively. What horizontal pushing force is required
When the Sun is straight overhead, a hawk dives toward the ground with the constant velocity of 4.50 m/s at 52° below the horizontal. Compute the speed of her shadow on the level ground.
Planet X rotates in the same manner as the earth, around an axis through its north and south poles, and is perfectly spherical. How long is the day on Planet X
An unstable particle is at rest and suddenly breaks up into two fragments. No external forces act on the particle or its fragments. What is the velocity of the more massive fragment
Charge q1 = 8.5 nC is located at the coordinate system origin, while charge q2 = 3.7 nC is located at (a, 0), In Joules, what is the total potential energy U of the final configuration of three charges
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