For a tidal energy device, bigger tidal range is better
What will be an ideal response?
This is true because a larger tidal range means a greater gravitational potential
energy difference.
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Which of the following statements about spectral types of stars is always true?
A) A star with spectral type G has a lower interior temperature than a star with spectral type B. B) A star with spectral type G has a lower mass than a star with spectral type B. C) A star with spectral type G has a cooler surface temperature than a star with spectral type B. D) A star with spectral type G has a smaller radius than a star with spectral type B. E) All of the above are true.
A hot, molten body of different materials will become ________
Fill in the blank(s) with correct word
Semiconductors: A simple junction transistor consists of three semiconductor sections consisting of
A. only pnp semiconductors. B. only npn semiconductors. C. either pnp or npn semiconductors. D. none of the given combinations.
When atom A loses an electron to atom B,
A) atom A becomes more negative than atom B. B) atom A acquires more neutrons than atom B. C) atom A acquires less neutrons than atom B. D) atom A becomes a positive ion and atom B becomes a negative ion. E) atom A becomes a negative ion and atom B becomes a positive ion.