Collisions between galaxies have little effect on the individual stars
Indicate whether the statement is true or false
TRUE
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If the Moon's orbital plane was aligned with the celestial equator we could
a. have eclipses every month. b. never have eclipses. c. have eclipses only at solstice. d. have eclipses only at the equinoxes.
The y component of the electric field of an electromagnetic wave traveling in the +x direction through vacuum obeys the equation Ey = (375 N/C) cos[kx - (2.20 × 1014 rad/s)t]. What is the wavelength of this electromagnetic wave? (c = 3.0 × 108 m/s)
A) 0.272 µm B) 1.36 µm C) 2.72 µm D) 8.57 µm E) 17.1 µm
Process of Science: What evidence is there of a subsurface ocean on Europa? Do you find it compelling?
What will be an ideal response?
Which has the highest frequency?
A) red light. B) green light. C) blue light. D) all the same