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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How many space must be left between adjacent rails if they are just to touch on a summer day when their temperature is 33degrees celsius?
A 3-kg object moving to the right on a frictionless, horizontal surface with a speed of 2 m/s collides head-on and sticks to a 2-kg object that is initially moving to the left with a speed of 4 m/s. After the collision, which statement is true?
The cannon is not restrained and moves backwards off the tower according to Newton's third law. Calculate the distance the cannon lands from the base of the tower.
A ball is thrown vertically upward with a speed of +13.0 m/s. How long does it take to reach its highest point?
A ball is thrown horizontally from the top of a building 0.10 km high. the ball strikes the ground at a point 65 m horizontally away from and below the point of release. What is the speed of the ball just before it strikes the ground?
Determine the change in the rate at which the following quantities enter and exit: combined thermal and flow work, mechanical energy, total energy. Determine heat trasfer rate. Properties may be obtained from thermo text.
Two particles are situated on the x axis. The particle q1, with 34 excess electrons, is situated at the point x = 100 µm. The other particle q2, with 17 excess electrons, is located at the origin. Give the x value of a point between the part
Find the magnitude and direction (relative to forward direction) of the resultant force that these engines exert on the rocket.
A loudspeaker at the origin emits sound waves on a day when the speed of sound is 340 m/s. A crest of the wave simultaneously passes listeners at the (x, y) coordinates (38 m, 0 m) and ( 0 m, 27 m).
Suppose that the speed of light in a vacuum were one million times smaller than its actual value: c = 3.00 × 102 m/s. The spring constant of a spring is 690 N/m. Determine how far you would have to compress the spring from its equilibrium leng
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