The energy per gallon of liquid hydrogen, compared to gasoline, is about
A. 3x less
B. about the same
C. 3x more
D. 12x more
Ans: A. 3x less
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A great advantage of using ________ to map the universe is that it detects distributions of both normal and dark matter
Fill in the blank(s) with correct word
How long would each of the materials on the list in Table 10.1 last at the 2000 use rate assuming the reserves given in 1968 were still correct? Compare your answers to those given in Table 10.3
What will be an ideal response?
An object is placed 40 cm in front of a lens of focal length 40 cm. A second lens is placed 17 cm beyond the first. An image forms 48 cm past the second lens. The lateral magnification of this system is
A) -2.8. B) -1.2. C) 1.2. D) 2.8. E) impossible to determine with the information given.
Consider an atom of gold in which the nucleus contains 79 protons and 118 neutrons. What is its atomic number and atomic mass number?
A) The atomic number is 118, and the atomic mass number is 79. B) The atomic number is 118, and the atomic mass number is 197. C) The atomic number is 79, and the atomic mass number is 197. D) The atomic number is 79, and the atomic mass number is 118.