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Question: Millikan used Stokes's law, which says that a small sphere of radius a falling with velocity v in a homogeneous medium of viscosity η = 18.6× 10-6 Pas is subject to a retarding force F = 6πηav.
He observed that a drop of oil of density ρ = 0.92gcm-3 would fall 0.522cm in 13.6s.
a. What was the radius of the drop?
b. What was its mass?
Suppose the person in Example gave the ball an extra shove that sent it backwards at 2 m s-1 after the collision. Find the person's final momentum.
The x, y, and z components of a magnetic field are Bx = 0.14 T, By = 0.17 T, and Bz = 0.17 T. What is the magnitude of the magnetic force that acts on this wire
The index of refraction for red light in water is 1.331 and that for blue light is 1.340. what are the underwater angles of refraction for the blue and red components of the light
Over the course of a multi-stage 4520 kilometer bicycle race, the front wheel of an athlete's bicycle makes 2.18 x 106 revolutions. Evaluate how many revolutions would the wheel have made
This is a two part question. Ron runs west for 30 minutes at a speed of 8 mi/h. What is the total distance that Ron has run
A boeing 747 "jumbo jet" has a length of 59.7m the runway on which the plane lands intersects another runway. the width of the intersection is 25.0m. the plane decelerates through the intersection at a rate of 5.7 meter per second square and clears i..
A 74-kg trampoline artist jumps upward from the top of a platform with a vertical speed of 4.5m/s. How fast is he going as he lands on the trampoline
Within cells, small organelles containing newly synthesized proteins are transported along microtubules by tiny molecular motors called kinesins. What force does a kinesin molecule need to deliver in order to accelerate an organelle with mass 0.0131 ..
A heart dysfunction that can cause death is ventricular fibrillation. This is an uncoordinated quivering of the heart as opposed to regular beating. what is the average power delivered
a ball of mass 8.0 g with a speed of 20.5 ms strikes a wall at an angle 21.0o and then rebounds with the same speed and
An ideal gas expands at a constant total pressure of 3.0 atm from 410mL to 790mL . Heat then flows out of the gas at constant volume, Calculate the total heat flow into the gas
While at the county fair, you choose to ride the Ferris wheel. Having eaten too many elephant ears and candy apples, you obtain the motion somewhat unpleasant. Find what is the magnitude of your acceleration
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