Ill give brainliest pls !
how are electromagnetic waves different from mechanical waves...
Ill give brainliest pls !
how are electromagnetic waves different from mechanical waves?
select one:
a. electromagnetic waves are all high frequency; mechanical waves are all low frequency.
b. electromagnetic waves can travel through a vacuum; mechanical waves require a medium.
c. electromagnetic waves are visible; mechanical waves are invisible.
d. electromagnetic waves always reflect; mechanical waves always refract.
Answers: 2
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The electric potential a distance r from a small charge is proportional to what power of the distance from the charge? a. r^-1 b. r c. r^-2 d. r^2
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Two masses are connected by a rope that hangs over a pulley as shown below. the pulley is a uniform cylinder of radius 푅=0.381meters and mass 푀=3.1푘푔. initially 푚"is on the ground and 푚#rests 2.5 meters above the ground. if the system is released, use conservation of energy to determine the speed of 푚#just before it strikes the ground. assume the pulley bearing is frictionless.
Answers: 2
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Answers: 1
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