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A centrifuge can be used to separate cells from a liquid. To increase the rate at which objects can be separated from solution, it is useful to make the centrifuge's speed as large as possible. If you want to design a centrifuge of diameter 1.6 m to have a force of 129,000 times the force of the Earth's gravity, what is the speed of the outer edge of the centrifuge? Such a device is called an ultracentrifuge. Centrifuges of this type are currently being used by certain countries (including Iran) to produce what is called enriched uranium for use in nuclear power plants or weapons. Naturally occurring uranium contains two isotopes (which have slightly different masses), only one of which is useful in these applications (see a later chapter). Ultracentrifuges like the one considered in this problem are used to process the gas UF6 and thereby separate the two uranium isotopes.
Suppose that a 1.00 cm3 box in the shape of a cube is perfectly evacuated, except for a single particle of mass 1.05 10-3 g. Find the mass density inside the box
A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 34.3m/s2, Find the maximum height ymax reached by the rocket
An athlete swims the length L of a pool in a time t1 and makes the return trip to the starting poisition in a time t2. (a) If she is swimming initially in the positive x-direction, determine her average velocities symbolically in (a) the first hal..
A 3.53kOhm resistor is connected to a generator with a maximum voltage of 121V. Find the average power delivered to this circuit
When the coil of a motor is rotating at maximum speed, the current in the windings is 4.33 A. When the motor is first turned on, calculate the resistance of the windings.
a hydroelectric turbine generator produces an electric power of 20 mwmegawatts. water enters the turbine penstock at
Two earthquake waves of the same frequency travel through thesame portion of the Earth, but one is carrying twice the energy. What is the ration of the amplitudes of the two waves
A 5.4-µC point charge is located at x = 0.9 m, y = 3.3 m, and a -3.9-µC point charge is located at x = 1.9 m, y = -1.9 m. (a) Find the magnitude and direction of the electric field at x = -3.2 m, y = 0.9 m.' (b) Find the magnitude and direction of..
question1a 32 percent efficient electric power plant generates 700mw of electric power and discharges waste heat into
The charge flowing through a light bulb attached to a 12.0-V battery in 14.0 s is 30.0 C. What is the average power supplied by the battery during this process
What is an average speed of this train
A 23 gram bullet traveling 230m/s penetrates a 2kg block of wood and emerge clearly at 170m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after bullet emerges.
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