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A baseball pitcher throws a 145 g baseball parallel to the ground with a speed of 36.29 m/s in the +x direction. The batter imparts an impulse of -9.59 to the ball so that the ball returns along the same path in the -x direction. What is the velocity of the ball after leaving the bat?
Dan is gliding on his skateboard at 4. He suddenly jumps backward off the skateboard, kicking skateboard forward at 8.00 (as measured by an observer on the ground). Dan's mass is 60 and skateboard's mass is 5.00 .How fast is Dan going as his fee..
two strings of identical mass and length are stretched with their ends fixed but the tension in one string is 1.10
Two freight cars, each with a mass of 2.4 multiplied by 105 kg, collide and stick together. One was at first moving at 3.4 m/s and the other was at rest. What is their final speed.
From the origin we wish to go to the point (3000,4000,0). A force of 10N will be applied until a velocity of 5 meters per second is achieved, then at the appropriate time, a force of 2N will be applied to bring the vehicle to a stop at the desired..
A high-speed flywheel in a motor is spinning at 450 when a power failure suddenly occurs. The flywheel has mass 38.0 and diameter 78 . The power is off for 25 and during this time the flywheel slows due to friction in its axle bearings.
At a particular moment in kayla's skydive, her acceleration is 16 meters/sec^2. how much force of air resistance is acting on her
a 2500-ft long pipeline is required to carry 21.5 cfs ft3sec of water to an industrial client. the limiting pressure
A 31.5 cm focal length converging lens is 20.0 cm behind a diverging lens. Parallel light strikes the diverging lens. What is the focal length of the diverging lens
A typical coal-fired power plant burns 350 metric tons of coal every hour to generate 720MW of electricity. 1 metric ton= 1000 kg. What is the power plant's thermal efficiency
What is the minimum thickness of coating which should be placed on a lens in order to minimize reflection of 406 nm light? The index of refraction of the coating material is 1.54 and the index of the glass is 1.79.
Two people hear a tornado siren, What is the intensity level (in dB) at the farther listener relative to the other listener
A bungee cord is stretched between two poles with a force of 382 N. The length of the cord is 36 meters and it has a mass of 3 kg. What is the velocity of a wave on this bungee cord
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