How many revolutions does it make during the time
A motor spins an 2 kg block around on an 80 cm arm at 200 rpm. The blosk is supported by a steel table after the motor stops. How long does the block take to come to rest? How many revolutions does it make during this time?
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On a distant planet, golf is just as popular as it is on earth. A golfer tees off and drives the ball 4.80 times as far as he would have on earth, given the same initial velocities on both planets. The ball is launched at a speed of 41.7 m/s at an
Assume the spear gun barrel is 1.80 m above the water surface, the fish is 1.40 m below the surface, and the spear travels in a straight line all the way to the fish.
If the distance from the center of the moon to the surface of the planet is 2.34500 × 105 km and the planet has a radius of 3975 km and a mass of 7.15 × 1022 kg, how long (in days) does it take the moon to make one revolution around the p
In a Young's double-slit experiment the separation distance y between the second-order bright fringe and the central bright fringe on a flat screen is 0.0169 m, when the light has a wavelength of 425 nm.
Gas is stored in a rigid container at 7 degrees C. The volume of the container is 2 cubic meters. The initial gauge pressure is 0. The gas is heated and reaches a gauge pressure of 0.8 MPa. Atmospheric pressure is 100kPa. What is the entropy chang
What is the strength of the electric field 4.0 cm from a small glass bead that has been charged to + 6.0 nC ? What is the direction of the electric field 4.0 cm from a small glass bead that has been charged to + 6.0 nC ?
(A) what is the pressure of the container? give your answer in atm. (B) The gas then undergoes an isothermal compression until the pressure is 3.0 atm. Immediately following, there is an isobaric compression until the volume is 1000 cm^3. What is
Calculate the maximum height of the water column that can be supported in this way, and compare with the length of the mercury column in a barometer. This problem illustrates why mercury is used in a barometer.
A tennis ball is struck and departs from the racket horizontally with a speed of 28.4 m/s. The ball hits the court at a horizontal distance of 19.4 from the racket. How far above the court is the tennis ball when it leaves the racket?
One end of a wire is attached to a ceiling, and a solid brass ball is tied to the lower end. The tension in the wire is 429 N. What is the radius of the brass ball?
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