Neptune's large moon ________ is the only large satellite known in a retrograde orbit
Fill in the blank(s) with correct word
Triton
Physics & Space Science
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If the radial velocity of a star is positive, the star is moving _________________ you
a. parallel to b. away from c. towards d. in circles around
Physics & Space Science
Matter Waves: An electron is moving with the speed of 1780 m/s. What is its de Broglie wavelength? (melectron = 9.11 × 10-31 kg, h = 6.626 × 10-34 J ? s)
A. 409 nm B. 302 nm C. 205 nm D. 420 nm E. 502 nm
Physics & Space Science
If the Sun's surface were cooler, how would its appearance change?
A) It would appear more red. B) It would appear more blue. C) It would become bright white. D) It would stay the same.
Physics & Space Science
Your weight is
A) another word for your mass. B) the gravitational attraction between you and Earth. C) a property of mechanical equilibrium. D) the same in all locations.
Physics & Space Science