Asinusoidal electromagnetic wave is propagating in a vacuum in the +z-direction.
if at a parti...
Asinusoidal electromagnetic wave is propagating in a vacuum in the +z-direction.
if at a particular instant and at a certain point in space the electric field is in the +x-direction and has a magnitude of 3.40v/m, what is the magnitude of the magnetic field of the wave at this same point in space and instant in time?
Answers: 1
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When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.
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Boxing gloves are padded to lessen the force of a blow. (a) calculate the force exerted by a boxing glove on an opponent’s face, if the glove and face compress 7.50 cm during a blow in which the 7.00-kg arm and glove are brought to rest from an initial speed of 10.0 m/s. (b) calculate the force exerted by an identical blow in the gory old days when no gloves were used and the knuckles and face would compress only 2.00 cm. (c) discuss the magnitude of the force with glove on. does it seem high enough to cause damage even though it is lower than the force with no glove?
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Answers: 3
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