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The magnetic field of a plane-polarized electromagnetic wave is given by B=1.2*10^-6 Sin[2pi (z/240 – (t*10^7)/8)] in SI units . The field vector is B_ = B(z,t)[(i^+J^)/ 2^(1/2)]. Find the average power per square meter carried by the EM wave. Write the electric field vector. Compute the Poynting vector.
A sign (mass 1700kg ) hangs from the end of a vertical steel girder with a cross-sectional area of 0.013m^2, What is the stress within the girder
Consider a conical pendulum with a bob of mass m=82.0 kg on a string of length L=10.0 m that makes an angle of theta=8.00 degrees with the vertical, Determine the radical acceleration of the bob.
A hydrogen atom has energy ?2.42×10?19 J, and the electron can be in any one of 6 different quantum states. Find the spectroscopic notation for this atom
A common belief is that a hole in a jet plane can suck a person out, Calculate the fractional difference between this force and the weight wman of a typical adult male (185 lb)
On a cold day, 25000 J of heat leaks out of a house. The inside temperature is 22 °C, What is the increase in the entropy of the universe that this heat loss produces
A horizontal force of 2.8 N is applied to a 1.2- kg radio, initially at rest on a table with a level surface. What is the coefficient of friction if it just begins to move
A bullet with mass 5.04 g is fired horizontally into a 2.125-kg block attached to a horizontal spring. Find the initial speed of the bullet-block system
What is the end daughter nucleus of a Th-234 nucleus that undergoes a series decay of 4 alpha decays followed bt one beta decay. Determine the energy produced in the following reaction
question1a bolt drops from the ceiling of a train car that is accelerating northward at a rate of 3.50 ms2.a what is
For lead 82Pb206 (atomic mass = 205.974440 u) obtain the mass defect in atomic mass units
Joey, whose mass is 37kg , stands at rest at the outer edge of the frictionless 250kg merry-go-round, 1.9m from its center. The merry-go-round is also at rest. What is the final angular speed of the merry-go-round
A 1.5 kg object initially at rest is raised to a height of 10 m by a force of 40 N. What is the velocity of the object at this height What time is needed for this motion
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