A gamma ray is another name for an electron
a. True
b. False
Indicate whether the statement is true or false
False
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Which is the most distant active galaxy?
a. Seyfert galaxies b. Radio galaxies c. Quasars d. BL Lac objects
Significant Figures: What is the quotient of 2.43 ÷ 4.561 expressed to the correct number of significant figures?
A. 5.3278 × 10-1 B. 5.328 × 10-1 C. 5.33 × 10-1 D. 5.3 × 10-1
A 10,000-kg rocket blasts off from earth with a uniform upward acceleration of 2.00 m/s2 and feels no air resistance. The upward thrust force its engines must provide during this acceleration is closest to
A) 20,000 N. B) 980,000 N. C) 118,000 N. D) 78,000 N.
People can snorkel down to a depth of roughly one meter. This means that the additional pressure on the air in their lungs is roughly
A. 9800 N. B. 9800 Pa. C. 9800 ATM. D. 19,600 N. E. 19,600 N/m2.