A problem with the Bohr model of the atom is that electrons circling the nucleus
A) accelerate and should continuously emit radiation.
B) lose energy and should spiral into the nucleus.
C) both of these
D) neither of these
Answer: A
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Where are the Trojan asteroids located?
A) on orbits that cross Earth's orbit B) along Jupiter's orbit, 60° ahead of and behind Jupiter C) surrounding Jupiter D) in the center of the asteroid belt E) on orbits that cross Mars's orbit
Which of the following is another term for widget?
A. thingamabob B. gidget C. gadget D. sandbox
The narrowness of the rings of Uranus and Neptune is believed to be caused by
a. gravitational interactions between ring particles. b. a spiral density wave which confines them. c. the magnetic field which holds them in place. d. the smaller mass of Uranus and Neptune as compared to that of Saturn. e. small shepherd moons that orbit near the rings.
A fast-moving body must have a larger acceleration than a slow-moving body
Indicate whether the statement is true or false