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electronic devices are usually enclosed in metal boxes, onefunction of the box is to shield the inside components fromexternal electric fields.
a) how does this shielding work? (something to do with faraday'scage???)
b) why is the degree of shielding better for constant or slowlyvarying fields than for rapidly vary fields?
c) explain the reasons why it is not possible to shield somethingfrom gravitational fields in a is similar way.
a 10-m-by-14-m house is built on a 12-cm-thick slab of concrete. what is the rate of heat loss through the slab if the
in a conversion from military to peacetime use a missile with a maximum horizontal range of 160 km is being adapted for
The diameter of a specific copper wire is 8.364 mm, Find the resistance of a 1.2 km length of such wire used for power transmission..
A golfer hits a tee shot off of a cliff that is 18.2 m high. If it lands in the fairway a horizontal distance of 270 m from the tee and is in the air for 5.3 seconds, What was the initial velocity of the golf ball
a solid metal sphere of radius a 1.30 cm is surrounded by a concentric spherical metal shell of inner radius b 3.50
What is the approximate mass of the cat.
The length of a moving spaceship is 28.4 m according to an astronaut on the spaceship. what is the speed of the spaceship
A toy steam engine has a mass of 1.00 kg. The toy starts from rest and reaches a velocity of 4.00 m/s in a time of 3.00 seconds while covering a distance of 4.50 meters, What is the change in the internal energy of the toy
During this process the arrow's deceleration has a magnitude of 1800 m/s2 and the block's acceleration has a magnitude of 450 m/s2
The peak wavelength for the blackbody radiation from a star corresponds to an energy of 2.92x10^ -19 J. what is the temperature of the star at the surface
The security alarm on a parked car goes off and produces a frequency of 1020 Hz. The speed of sound is 343 m/s. At what speed are you driving
A motorcycle and a police car are moving toward one another. The police car emits sound with a frequency of 514 Hz and has a speed of 30.0 m/s. The motorcycle has a speed of 13 m/s. What frequency does the motorcyclist hear?
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