The Milky Way is similar in many ways to M31, the Andromeda Galaxy
Indicate whether the statement is true or false
TRUE
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Series/Parallel Circuits: If emf of the ideal battery is V = 100 V, what is the potential difference across R5 for the circuit shown in the figure?
A. 19 V B. 40 V C. 75 V D. 77 V
Which observation(s) and/or experiment(s) demonstrate ways that the chemical building blocks of life (amino acids and DNA bases) could have originated on the early Earth?
A) Amino acids and DNA bases form from simple chemical reactions in experiments simulating the early Earth atmosphere. B) These complex molecules have been found within meteorites. C) Experiments have shown that naturally occurring clays can catalyze the formation of RNA strands. D) All of the above
When a particle approaching a potential step has a total energy that is greater than the potential step, what is the probability that the particle will be reflected?
a. P < 0. b. P = 0. c. P = 1. d. P > 0. e. P = ?.
Two moons orbit a planet in nearly circular orbits. Moon A has orbital radius r, and moon B has orbital radius 4r
Moon A takes 20 days to complete one orbit. How long does it take moon B to complete an orbit? A) 20 days B) 40 days C) 80 days D) 160 days E) 320 days