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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.
The moon orbits the Earth at a distance of about 3.84 x 108 meters in a path that takes 27.3 days to complete. What is the centripetal acceleration of the moon
A fountain shoots a jet of water 10 m into the air. The fountainhas a round nozzle of diameter 1.84 cm at ground level, fed by a pump located 6 m belowground through a round pipe of diameter 5.19 cm .
A 10-kg projectile launched over level ground has three times the kinetic energy at the moment of its launch as it does at its peak height. Find its impact velocity
The punter on a football team tries to kick a football so that it stays in the air for a long "hang time". If the ball is kicked with an initial velocity of 25.0 m/s at an angle of 60.0 degrees above the ground, illustrate what is the "hang time"?
A train has a mass of 5.22 ? 106 kg and is moving at 79.0 km/h. The engineer applies the brakes, What is the final speed of the train
A spring is hung from the ceiling. A 0.509 -kg block is then attached to the free end of the spring. Find the angular frequency of the block's vibrations
A person whose eyes are 1.7 m above the floor stands in frontof a plane mirror. What is the height of the shortest mirror in which shecan see her entire image
A hot saturated solution of a material to be crystallized is passed through a piece of fluted filter paper in a long-stemmed funnel. What could go wrong with this procedure
6 - two equal masses of charge 36 nC each are suspended at the end of two 1-m strings of negligible mass, The ropes make and angle of 5 with respect to each other
What is the amount of the normal force on the charge on the surface in Newtons, when including both the weight of the object and the electric force on it?
Water flows trough a normal garden hose at 2 m/s. how fast does the water emerge from the hose nozzle
A radar signal takes 2.7s to go to the moon and return. How far away was the moon at that time
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