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You are asked to make some measurements of microwaves using a "polarizing grid" consisting of metal wires. Since an electric field does not penetrate a conductor, linearly polarized microwave radiation will pass through the grid most easily when (more than one answer can be correct): a)The wires are oriented at 45° to the oscillating electric field. b) The wires are parallel to the oscillating electric field, but less than 50% of the radiation is stopped. c)The radiation cannot be stopped by a wire grid at all. d)The wavelength of the radiation is the same as the spacing between wires. e)The wires are perpendicular (at 90°) to the oscillating electric field. f)The wires can either be parallel or perpendicular to the oscillating electric field. g)The wires are parallel to the oscillating electric field. h)The radiation can only be stopped by a wire grid if a polaroid is also used. i)The wavelength of the radiation is the same as the width of the entire grid.
A circular loop of radius 2.58 cm contains 65 turns of tightly wound wire. what torque acts on the loop
A speedboat moving at 33.0 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the boat with a constant acceleration of ?3.20 m/s2 by reducing the throttle. (a) How long does it take the boat to reach the buoy? (b)What is the velocit..
A small ferryboat is 4.00 m wide and 6.00 m long. When a loaded truck pulls onto it, the boat sinks an additional 4.60 cm into the river
100g of ice at -10C is placed into 100g of warm water in an insulated container. Calculate the mass of the ice that remains when equilibrium is achieved
A 10.0 g object moving to the right at 15.0 cm/s makes an elastic head-on collision with a 15.0 g object moving in the opposite direction at 34.0 cm/s
A 56.0-kg ice skater is moving at 3.94 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. obtain the force exerted by the horizontal rope on her arms
An ideal transformer steps down 120 volts and the 2630 turn secondary supplies 12 amperes. what is the ratio of output power to input power
Two infinite long wires are parallel to one another and are 5.0 cm apart. Both have current passing through them in the same direction. What is the resulting force on the 1.0 A wire
q1. charge a and charge b are 2.5 m apart. charge a is 1.4c and charge b is 2.5c. charge c that is 2.0 c is located
Suppose that the resistance of such a resistance thermometer is 105? when its temperature is 17.2 °C. The wire is then immersed in a liquid, What is the temperature of the liquid
What power is dissipated in a single light. A proton is fixed in place. An electron is released from rest and allowed to collide with the proton. Then the roles of the proton and electron are interchanged, and same experiment is repeated. Which is ..
The velocity of an airplane with respect to the ground is 2.00 x 102 m/s at an angle of 30.0 degrees NORTH of EAST. find the velocity of the air with respect to the ground
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