The Hope Diamond weighs 44.5 carats. There are 200 mg per carat. How many kilograms does the Hope Diamond weigh?
A) 0.000890 kg
B) 0.00890 kg
C) 0.0890 kg
D) 0.890 kg
E) 8.90 kg
B
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What was the first evidence that quasars were different from astronomical objects before they were observed in visual wavelengths?
a. The first quasars were seen to have fuzz. b. Quasars emitted radio energy like active galaxies, but appeared to be point sources in radio wavelengths. c. Quasars showed significant gravitational lens effects. d. The spectra of quasars looked like that of an M dwarf. e. The large red shifts originally indicated that they were orbiting the center of the Milky Way.
An American football field, including end zones, is 360 feet long and 160 feet wide. What is its area in square meters?
A) 4,920 square meters B) 5,350 square meters C) 88.0 square meters D) 12,100 square meters E) 13,200 square meters
A bimetallic strip is formed from two materials that have different heat capacities
a. True b. False Indicate whether the statement is true or false
Wilhelm Roentgen discovered
a. X-rays. b. gamma rays. c. radio waves. d. microwaves.