The region in the H-R Diagram where evolved, low mass stars are converting helium to carbon in their cores is the ________
Fill in the blank(s) with correct word
horizontal branch
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Answer the following statement(s) true (T) or false (F)
1. In a maximally efficient heat engine, the amount of entropy that the hot reservoir loses as heat flows out of it is exactly balanced by the entropy that the cold reservoir gains as the waste heat flows into it.
The visible light portion of the electromagnetic spectrum has wavelengths ranging from about 400 to 700 nanometers (nm). Which of the following statements is true?
A) Blue light has wavelength of about 400 nm, red light has wavelength of about 700 nm. B) Blue light has wavelength of about 700 nm, red light has wavelength of about 400 nm. C) Blue light and red light can both have wavelengths that may be anywhere between 400 and 700 nm. D) Blue light and red light both have wavelengths of about 550 nm.
Why was the 1978 Nobel Prize in Physics given to Penzias and Wilson from Bell labs?
What will be an ideal response?
Electric dipoles always consist of two charges that are
A) equal in magnitude; opposite in sign. B) equal in magnitude; both are negative. C) equal in magnitude; both are positive. D) unequal in magnitude; opposite in sign. E) unequal in magnitude; both are negative.