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A horizontal 808 N merry-go-round is a solid disk of radius 1.56 m, started from rest by a constant horizontal force of 50.5 N applied tangentially to the edge of the disk. Find the kinetic energy of the disk after 2.96 s.
a 55 g particle is moving to the left at 11 ms. how much work must be done on the particle to cause it to move to the
An electron moves with a speed of 5.0 x 10^4m/s perpendicularto a uniform magnetic field of .20T. What is the magnitude ofthe magnetic force on the electron
A 140 kg astronaut (including space suit) acquires a speed of2.50 m/s by pushing off with his legs from an 1800 kg space capsule. What is the change in speed of the space capsule
If one ball's initial speed was 2.50 m/s, and the other's was 3.20 m/s in the opposite direction, find what will be their speeds after the collision
When one gallon of gasoline is burned in a car engine, 1.19 x 108 J of internal energy is released. how many miles can the car travel on one gallon of gas
Determines increases or decreases in a series of financial statement data and indicates the level of full and transparent information provided to users of the financial statements.
What is the gravitational potential energy of an interstellar cloud, with a density of 1000 H2 molecules/cm3, and radius of 10 pc
A particle of charge +15 µC and mass 2.00 10-5 kg is released from rest in a region where there is a constant electric field of +280 N/C
Estimate the gravitational force between the Sun and Venus. The mass of the Sun is 1.99×10^30 kg. The mass of Venus is 48.7×10^23 kg. The distance between them is 10.8×10^10 m.
A simple pendulum is used to measure g, using the relation T=2piesqrt(l/g), What is the standard deviation of the mean, barg, for the calculated value of g
When an automobile moves with constant velocity, the power developed is used to overcome the frictional forces exerted by the air and the road. what total frictional force acts on the car at 49 mph
A certain freely falling object, released from rest, requires 1.50 s to travel the last 30.0 m before it hits the ground. Find the velocity of the object when it is 30 m above the ground
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