Electromagnetic waves vary in
a. the speed they travel in a vacuum.
b. wavelength and...
Physics, 24.11.2019 00:31 foralways3348
Electromagnetic waves vary in
a. the speed they travel in a vacuum.
b. wavelength and frequency.
c. the way they reflect.
d. the orientation of their electric and magnetic fields.
Answers: 1
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In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?
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Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:
Answers: 3
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Abatter hits a 0.140-kg baseball that was approaching him at 30 m/s and, as a result, the ball leaves the bat at 40 m/s in the reverse of its original direction. the ball remains in contact with the bat for 2.0 ms. what is the magnitude of the average force exerted by the bat on the ball?
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If state law mandates that elevators cannot accelerate more than 2.40 m/s2 or travel faster than 14.8 m/s , what is the minimum time in which an elevator can travel the 373 m from the ground floor to the observatory floor? ?
Answers: 1
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