Why were elements heavier than helium not produced during the Big Bang?
What will be an ideal response?
Once helium was formed from deuterium, the temperature and pressure dropped too low for fusion to produce the heavier elements.
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The Sun's blackbody curve peaks in the ________ portion of the spectrum
A) radio B) visible C) ultraviolet D) X-ray E) infrared
Clouds denoted by the prefix "alto" are
A) high clouds that form about 6000 meters above the ground. B) middle clouds that form 2000 to 6000 meters above the ground. C) low clouds that form 1000 to 2000 meters above the ground.
In an AC circuit the voltage varies as V = 96. sin (277 t) volts
(a) What is the rms voltage? (b) What is the frequency?
A light bulb is connected to a 12-V battery. Because light bulbs are non-Ohmic, the resistance of the bulb is not constant, but increases as the bulb gets hotter. As the bulb heats up, which value remains unchanged? a. The power consumed by the bulb. b. The current through the bulb
c. The voltage across the bulb. d. All the above change.