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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.
A shell is fired from the ground with an initial speed of 1.56 multiplied by 103 m/s at an initial angle of 40° to the horizontal. find the shell's horizontal range
A heat engine operates at an efficiency of 15%. what is the amount of heat it discharges to the cold reservoir
Electrons are accelerated so that their de Broglie wavelength is .083nm. What is the kinetic energy of the electrons so that they have this de Broglie wavelength
Three sheets of plastic have unknown indices of refraction. Sheet 1 is placed on top of sheet 2, what is the expected angle of refraction in sheet 3
You attach a meter stick to an oak tree, such that the top of the meter stick is 2.67 meters above the ground. how high above the ground was the acorn before it fell
A cube of ice is taken from the freezer at -7.9°C and placed in a97g aluminum calorimeter filled with322g of water at room temperature of 20°C. What was the mass of the ice cube
an object starts moving in a straight line from position x at time t0 with velocity v0 . its acceleration is given by
An object acted on by three forces moves with constant velocity. Find the magnitude of the third force acting on the object
The stairs are 83 long and inclined at the angle of 31. If a player has a mass of 87, estimate his average power output on the way up. Overlook friction and air resistance.
question 1. draw a picture of a moving source and the waves surrounding it according to what you observed in this
An alpha particle (the nucleus of a helium atom formed by 2 protons and 2 neutrons with charge q = +2(1.6 x 10-19 C), Calculate the acceleration of the alpha particle
Steam is expanded from 12.5 MPa and 900 degrees Celsius to 0.30 MPa, 400 degrees Celsius in an adiabatic turbine. Determine the isentropic efficiency of this turbine
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