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A charge of -5.85 nC is uniformly distributed on a thin square sheet of non conducting material of edge length 20.1 cm. What is the surface charge density of the sheet?
If the free ends of the two cylinders are maintained at constant temperatures of 93?C (steel) and 28?C(copper), how much heat will flow through the cylinders in 25 min
question1a 95 m long train begins uniform acceleration from rest. the front of the train has a speed of 25ms when it
question a proton has 1836 times the rest mass of an electron. at what speed will an electron have the same momentum as
A gas is compressed from 668 cm3 to 230 cm3 at a constant pressure of 306 kPa. Obtain the change in thermal energy of the gas during this process
A muonic atom is an atom containing a muon (like an electron, but 206.46(30) times the electron mass. Calculate the radius of the n=1 orbit for the muon in a lead muonic atom. I know the answer is 3.1*10^-15m, but i don't know how to arrive at that a..
As part of an excercise program, a woman walks south at a speed of 2.00 m/s for 60 minutes. She then turns around and walks north a distance of 3000 m in 25.0 minutes
A small rubber ball is launched by a compressed-air cannon from ground level with an initial speed of 18.9 m/s directly upward. How long does it take to reach the maximum height
An airplane is flying through a thundercloud at a height of 2400 m. (Flying at this height is very dangerous because of updrafts, turbulence, and the possibility of electric discharge.)
three identical metal spheres are charged so that sphere a has a charge of 290 oc sphere b has a charge of -200 oc and
Microbiologists measure total current due to potassium ions (K +) moving through a cell membrane of a rock crab neuron cell to be 35 nA. How many ions pass through the membrane each second
The Hamiltonian of a system of two (spin- 1/2) electrons, H= ?1?z1+?2?z2 where ?z is the Pauli Matrix, ? is an energy parameter and our subscripts represent the two electrons 1 and 2. What is the basis where this Hamiltonian is diagonal and what is t..
A 100g cube of ice at 273k is dropped into 1kg of water that was originally at 353k. what is the final temperature of the water after the ice has melted?
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