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1. Compute the reflection loss and absorption loss for a 20-mil steel (SAE 1045) barrier at 10 kHz, 100 kHz, and 1 MHz for a near-field electric source that is a distance of 5 cm from the shield. [188.02 dB, 66.76 dB, 158.02 dB, 211.11 dB, 128.02 dB, 667.6 dB]
2. Compute the reflection loss and absorption loss for a 20-mil steel (SAE 1045) barrier at 10 kHz, 100 kHz, and 1 MHz for a near-field magnetic source that is a distance of 5 cm from the shield. [-11.45 dB use R = 0, 66.76 dB, 21.45 dB use R = 0, 211.11 dB, 8.55 dB, 667.6 dB]
A light beam traveling in the negative z direction has a magnetic field B=(3.02 x 10-9T) x + (-5.28 x 10-9T) y at a given instant of time. The electric field in the beam has a magnitude of1.82 N/C at the same time.
A high speed train is traveling at a constant 150 m/s ( about300mph) on a straight, horizontal track across the south pole. In What directionis the plumb line on the train deflected
f the electric flux through a circular area is 7.0 nm2/c, what is the electric flux through a circle of double the diameter assuming the orientations of the circles are the same and the electric field is uniform
When the afternoon Sun reaches an angle of 27.0° above the horizon, sunlight ceases to illuminate the bottom of the tank. Evaluate how deep is the tank?
The largest barometer ever builds were an oil-filled barometer constructed in Leicester, England in 1991. Calculate the density of the oil in the barometer
What change in magnetizing force is required to decrease the flux density of magnetic material from a saturation in the positive direction to zero.
A stonewith a mass of 2.40-kg is released from rest and falls toward Earth(near the surface of the Earth). Use the impulse-momentum theorem to compute its momentum after falling for 4.00 seconds
A toroidal solenoid has a mean radius of 14.0 and a cross-sectional area of 3.40 and is wound uniformly with 120 turns. What is the mutual inductance of these coils
Electric current is charge flowing per unit time. If we increase the kinetic energy of the photoelectrons (with increasing the energy of the incident photons), mustn’t the current increase, because the charge flows more rapidly? Why doesn’t it?
The golden gate bridge in San Francisco has a main span of length 1.28km, one of the longest in the world. How does this compare to the elastic limit of steel
Water drives a waterwheel (or turbine) of radius R = 3.0 m as shown in the figure. The water enters at a speed v1 = 6.5m/s, What is the torque the water applies to the waterwheel
A bullet of mass 5.5 g is fired horizontally into a 2.8 kg wooden block at rest on a horizontal surface. The coefficient of kinetic friction among block and surface is 0.15. The bullet comes to rest in the block, which moves 1.70 m.
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