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A sphere of radius R has a radius dependent charge density ρ = B . r3 in terms of R and B. Calculate the potential as a function of r from the center of the sphere.
Human blood contains plasma, platelets, and blood cells. To separate the plasma from other components, centrifugation is used. Effective centrifugation requires subjecting blood to an acceleration of 2000g or more.
In positron emission tomography an electron and positron annihilate, and two photons of the same energy are detected. What is the energy and the wavelength of the photon? The electron-positron pair can be assumed stationary before the annihilation..
Three masses (m = 1.2, 2.5 and 3.4 kg) are placed on a horizontal frictionless surface at the corners of an equilateral triangle of edge length l = 140 cm. Where is the center of mass?
A steam power plant has, at the turbine entrance, saturated vapor with a pressure of 40 bar. The turbine exit is at 50 degrees C. The pump entrance is at 50 degrees C as well, and its exit is saturated liquid at 40 bar. The pump and turbine are is..
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. What is the weight of the heaviest bear that the ice can support without sinking completely beneath the water
A falling skydiver of mass 86.0 kg accelerates downward at 6.7 m/s2. What is the upward force due to air resistance
How does an electroscope work? I have a homework problem that is asking me to sketch an arrangement of excess positive or negative charges in various regions on a picture of an electroscope (that is positiv charged) to show what happens to the charg..
The fourth harmonic is four times the frequency of the fundamental. A node is a position on a standing wave of minimum displacement. Frequency is inversely proportional to wavelength, wave speed constant
a large pump supplies 0.585 cumecs at 620kpa downward into a 75 degree steel bend that expands from 300mm into a 450mm
A 60 skydiver can be modeled as a rectangular "box" with dimensions 21 41 1.8. What is his terminal speed if he falls feet first
A parallel plate capacitor has a capacitance of 6.3 µF when filled with a dielectric. evaluate the dielectric constant of the dielectric
You have a 1.2m long copper wire. You want to make an N-turn current loop that generates a 1.8mT magnetic field at the center when the current is 1.6A. What will be the diameter of your coil
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