Physics, 04.02.2020 13:53, ashgold324
What causes the radio pulses of a pulsar?
a. the star vibrates.
b. as the star spins, beams of radio radiation from it sweep through space. if one of these beams points toward the earth, we observe a pulse.
c. the star undergoes nuclear explosions that generate radio emission.
d. the star's dark orbiting companion periodically eclipses the radio waves emitted by the main star.
e. a black hole near the star absorbs energy from it and re-emits it as radio pulses.
Answers: 2
Physics, 22.06.2019 15:50, showerofstars
How many neutrons does plutonium -196 with an atomic number of 78.
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Physics, 22.06.2019 23:20, jjhagan22
Consider each of the electric- and magnetic-field orientations given next. in each case, what is the direction of propagation of the wave? a)\vec ein the +xdirection,\vec bin the +ydirection. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction b)\vec ein the -y direction,\vec bin the +x choose+ x direction- x direction+ y direction- y direction+ z direction- z direction c)\vec ein the +z direction,\vec bin the -x direction. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction d)\vec ein the +y direction,\vec bin the -z direction. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction
Answers: 3
What causes the radio pulses of a pulsar?
a. the star vibrates.
b. as the star sp...
a. the star vibrates.
b. as the star sp...
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