The gas created by the big bang was so hot that it was completely _______________ until the Universe was no longer radiation-dominated
Fill in the blank(s) with correct word
ionized
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Doubling the number of loops of wire in a coil produces what kind of change on the induced emf, assuming all other factors remain constant?
A) The induced emf is 4 times as much. B) There is no change in the induced emf. C) The induced emf is twice as much. D) The induced emf is times as much. E) The induced emf is 3 times as much.
What is happening to the mass of the Sun over time? Explain
What will be an ideal response?
If you rub a transparency sheet with tissue and then hold the transparency sheet and the tissue at rest a short distance apart, they will then exert
A) a repulsive electric force on each other, but no magnetic force. B) an attractive electric force on each other, but no magnetic force. C) a repulsive magnetic force on each other, but no electric force. D) an attractive magnetic force on each other, but no electric force. E) no electric or magnetic forces on each other.
Which of the following molecules contains an ionic bond?
A) MgCl2 B) Cl2 C) SF3 D) PO4-3 E) none of the above