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A merry-go-round is 11m in diameter. The outermost horses are set at a diameter of 10m. If the merry-go-round spins at 2 RPM what is the tangential speed of the outermost horses?
According to recent test data, an automobile travels 0.250 mi in 19.9 s, starting from rest. The same car, when braking from 60.0 mi/h on dry pavement, stops in 146 ft. Find the acceleration of this car when it is braking
A bullet with a mass of .06 kg hits a 5.0 kg block with an initialspeed of 225 m/s. The block is connected to a spring. Thefriction between the block and the table is negligible. Uponimpact the bullet bounces back from the box with a speed of 75m/s.
A neutron at rest decays into a proton and an electron. How much Kinetic energy (in MeV) are shared by the electron and proton? Can a proton decay into a neutron and positron?
A 270 g ball at the end of a string is revolvinguniformly in a horizontal circle of radius 0.51 m. The ball makes1.7 revolutions in one second. What is the speed of the ball as itgoes around in the circle?
an olive is at the bottom of a glass of alcohol n 1.36 5.21 cm beneath the surface. above the alcohol is air. to a
a mass-spring system oscillates on a horizontal frictionless surface with an amplitude of 3.56 cm. if the spring
A golf ball is dropped from rest from a height of 8.10 m. It hits the pavement, then bounces back up, rising just 5.60 m before falling back down again. calculate the total amount of time that the ball is in the air
The rocket above has an exhaust gas velocity of 2723 m/s and a burn rate of 5149 kg/s. If it has a mass of 1,000,000 kg what is its initial acceleration to two decimal places?
A harmonic wave in a wire has amplitude 7.07 mm, wavelength 2.61 m, and frequency 254 Hz. What is the propagation speed of the wave
As a rocket passes the earth at 0.75c, it fires a laser perpendicular to its direction of travel, What is the speed of the laser beam relative to the earth
Compute the voltage drop along a 28 m length of household no. 14 copper wire (used in 15 A circuits). The wire has diameter 1.628 mm and carries a 14 A current
A 2.2hp electric motor on a water well pumps water from 14m below the surface. How many liters of water does the motor pump in 2.0hr
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