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A centrifuge in a medical laboratory rotates at an angular speed of 3,700 rev/min. When switched off, it rotates through 46.0 revolutions before coming to rest. Find the constant angular acceleration (in rad/s2) of the centrifuge.
A rock is thrown downward into a well that is 8.90 deep. If the splash is heard 1.20 seconds later, what was the initial speed of the rock? Take the speed of sound in the air to be 343 m/s.
If she is served 200 of coffee at 85 in a well-insulated container, how much ice at 0 must she add to obtain a final temperature of 33.
A ladder of unknown length and mass of 29.00 kg rests on a rough floor, and leans against a rough wall. The coefficient of static friction between the ladder and both the floor and wall are 0.68.
Two masses are connected by a light string passing over a light, frictionless pulley, Determine the speed of each object when the two pass each other
Red light travels at 2.07×108 m/s in a particular type of oil. What is the index of refraction for red light in the oil
Peter and Carter are dropping rocks into a stream from a bridge at a height of 28 m above the water below, As Meg emerges from the water below she is struck by both rocks. Calculate the speed of each rock at impact with Meg
The skater farthest out has a mass of 58.0 kg and is 7.80 m from the pivot. He is skating at a speed of 6.40 m/s. Find out the magnitude of the centripetal force that acts on him.
A projectile of mass 1.8 kg approaches a stationary target body at 4.8 m/s. What is the magnitude of the momentum of the target body after the collision
How long after the car passes point A does the radio experience a minimum in the net signal? suppose that the wavelength has the value found in part.
When G was first measured by Henry Cavendish, newspapers of the time hailed his experiment as "weighing Earth experiment." And Why.
A device used in radiation therapy for cancer contains 6.20×10-1 g of cobalt 2760Co (59.9333819 u). Determine the activity of the radioactive material
A gun shoots bullets that leave the muzzle with a speed of 341. If a bullet is to hit a target 177 away at the level of the muzzle, the gun should be aimed at a point above the target.
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