What is the geometric shape of Earth?
A. an oblate spheroid
B. flat
C. a prolate ellipsoid
D. a perfect sphere
E. an annular toroid
Answer: A
Physics & Space Science
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Which of the following reaction energies is the least exothermic (but still an exothermic reaction)?
A) 540 kJ/mole B) -540 kJ/mole C) 125 kJ/mole D) -125 kJ/mole E) not enough information given
Physics & Space Science
After the switch is closed in a series LR circuit, what is the current when a time equal to four time constants has elapsed?
A. (1/5) Imax B. (15/16) Imax C. (1/16) Imax D. 0.018 Imax E. 0.98 Imax
Physics & Space Science
Dispersing light from a hot wire gives what type of spectrum?
a. Line absorption b. Continuous c. Line emission d. Ultraviolet
Physics & Space Science
The expression(s) indicating the atomic number of a nucleus is
a. A b. N c. Z d. Z + N e. A – Z
Physics & Space Science