Like supernovae, quasars must end with a violent explosion
Indicate whether the statement is true or false
FALSE
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Which of the following are true statements about the extrasolar planets found so far?
A) Extrasolar planets have a much wider range of densities than the planets in the solar system. B) Extrasolar planets fall neatly into the terrestrial and jovian categories. C) Extrasolar planets all have nearly circular orbits. D) All of the above are correct.
Two lamps with different filament thicknesses, and therefore different resistances, are connected in series. Greater current is in the lamp with the
A) thick filament. B) thin filament. C) same in each
A pilot punches the throttle lever forward, changing his speed from 0 m/s to 40 m/s in 7 seconds. The acceleration of the racecar is _________
Fill in the blank(s) with correct word
Radioactivity in the Earth is responsible for
A. helium we use in balloons B. warmth to keep the oceans liquid C. creation of the oxygen we breathe D. navigation of birds