_______ has the most tightly bound nucleus
a. Uranium b. Iron
c. Helium d. Hydrogen
b
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A 1-kg ball is thrown straight up at 10 m/s. Neglecting air resistance, the net force that acts on the ball when it is halfway to the top of its path is
A) 1/2 N. B) 1 N. C) 5 N. D) 7.5 N. E) 10 N.
An irregular galaxy contains mostly
a. lower-main sequence stars and giants. b. upper main sequence stars and giants. c. upper main sequence stars and gas and dust. d. upper and lower main sequence stars and gas and dust. e. white dwarfs and supergiants.
According to Galileo, a rolled ball eventually comes to a stop because
A) of friction. B) of inertia. C) it seeks its natural state of rest. D) all of the above
Series/Parallel Circuits: If V = 40 V and the battery is ideal, what is the potential difference across R1 in the figure?
A. 6.7 V B. 8.0 V C. 10 V D. 20 V