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A plane polarized electrodynamics wave traveling in a dielectric medium of refractive indix n is reflected at normal incidence from the surface of a conductor. Find the phase change undergone by its electric vector if the refractive index of the conductor is n2=n(1+ip)
A fireman d = 59.0 m away from a burning building directs a stream of water from a ground- level fire hose at an angle of ?i = 29.0° above the horizontal, at what speed will the water strike the building
A 0.7 kg block of ice is sliding by you on a very slippery floor at 3.5m/s. As it goes by, you give it a kick perpendicular to its path. Your foot is in contact with ice block for 0.003 seconds.
A flight attendant pulls her 75 N flight bag a distance of 305 m along a level airport floor at a constant velocity. Find the work she does on the flight bag
Inductors in parallel. Two inductors L1 = 1.34 H and L2 = 2.20 H are connected in parallel and separated by a large distance so that the magnetic field of one cannot affect the other. Calculate the equivalent inductance
What is the smallest radius of an unbanked (flat) track around which a bicyclist can travel if her speed is 30 km/h and the coefficient of static friction between tires and track is 0.21
1.Tom has a mass of 70.0 kg. and Sally has mass of of 50 kg. Tom and sally are are standing 10.0 m apart on the dance floor find the size of the gravitational force.
A 55 kilogram gymnasts hang vertically from a pair of parallel rings. If the ropes are supported so that they make an angle of 45 degrees with the ceiling, evaluate what is the tension in each rope
a 1.2-kg 10-cm-diameter solid sphere is rotating about its diameter at 69 revmin.a what is its kinetic energy?b if an
Consider a box with a lid 2.2 m wide and0.88 m long. If the inside of the box isevacuated (i.e., its pressure is zero), how much force is required to open the lid
after completing the experiment with the single slit you wish to determine the width of the slit. recall that the
A 250-N sphere 0.20 m in radiusrolls without slipping 6.0 m down a ramp that is inclinedat 40° with the horizontal. What is the angular speed of the sphere
An unstable particle with a mass equal to 3.34 10-27 kg is initially at rest. Find the masses of the fragments
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