The "Isaac Newton of electromagnetism" was
A) Faraday.
B) Maxwell.
C) Schiglegrueber.
D) Hertz.
E) Einstein.
B
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Planetesimals beyond the orbit of _____ failed to accumulate into a protoplanet because the gravitational field of _____ continuously disturbed their motion
a. Neptune; Uranus b. Jupiter; Mars c. Earth; Saturn d. Mars; Earth e. Mars; Jupiter
Spectral Series: One of the emission lines described by the original version of Balmer's formula has wavelength 377 nm. What is the value of n in Balmer's formula that gives this emission line?
A. 11 B. 12 C. 13 D. 14
Series/Parallel Circuits: You obtain a 100-W light bulb and a 50-W light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. If each one is an incandescent bulb of fixed resistance, which statement about these bulbs is correct?
A. Both bulbs glow with the same brightness, but less than their normal brightness. B. Both bulbs glow with the same brightness, but more than their normal brightness. C. The 100-W bulb glows brighter than the 50-W bulb. D. The 50-W bulb glows more brightly than the 100-W bulb.
A ball falls from a height h from a tower. Which of the following statements is true?
(A) The potential energy of the ball is conserved as it falls. (B) The kinetic energy of the ball is conserved as it falls. (C) The difference between the potential energy and kinetic energy is a constant as the ball falls. (D) The sum of the kinetic and potential energies of the ball is a constant. (E) The velocity of the ball is constant as the ball falls.