Physics, 16.11.2019 06:31 rileyeddins1010
Asinusoidal electromagnetic wave in a vacuum is propagating in the positive z-direction. at a certain point in the wave at a certain instant in time, the electric field points in the negative x-direction. at the same point and at the same instant, the magnetic field points in the
a. positive y-direction.
b. negative y-direction.
c. positive z-direction.
d. negative z-direction.
e. none of the above
Answers: 1
Physics, 22.06.2019 12:10, anaroles04
Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?
Answers: 2
Physics, 22.06.2019 16:30, xxaurorabluexx
An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?
Answers: 1
Asinusoidal electromagnetic wave in a vacuum is propagating in the positive z-direction. at a certai...
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