Harlow Shapley mapped the Milky Way using the period-luminosity relationship for RR Lyrae stars
Indicate whether the statement is true or false
TRUE
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How does the explosion of a nuclear bomb provide evidence for the theory of relativity?
A) The mass of the bomb when it explodes is much greater than its normal mass. B) bomb causes things in its vicinity to move at very high speeds, allowing scientists to measure effects of time dilation. C) The bomb shortens the lifetimes of all people who happen to be near it when it detonates. D) The bomb converts rest-mass energy into thermal energy in accord with E = mc2, which is part of the theory of relativity.
Which of following statements about the image formed by a single converging lens are true? (There could be more than one correct choice.)
A) The image is always real. B) The image is always virtual. C) The image is always inverted. D) The image is always upright. E) None of the above choices are correct.
Tutankhamen's gold coffin weighs 250 pounds. What is the mass of the coffin in kilograms?
A) 110 kg B) 550 kg C) 130 kg D) 95 kg E) 11 kg
Determine the energy stored in C2 when C1 = 15 ?F, C2 = 10 ?F, C3 = 20 ?F, and V0 = 18 V
a.
0.72 mJ
b.
0.32 mJ
c.
0.50 mJ
d.
0.18 mJ
e.
1.60 mJ