If light of wavelength 600 nm is used to locate an electron to one wavelength of the light, what is the maximum uncertainty in the electron's momentum?
a. 
b. 
c. 
d. 
e. 
c.
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Which of the following discovered surrounding Enceladus by the Cassini space suggest the presence of liquid water beneath the surface?
A) ice particles B) sodium compounds C) silica particles D) all of these
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.
The 1560 kg solid steel door to a bank vault is 2.00 m high, 1.00-m wide and 10-cm thick. One hinge is 60.0 cm down from the top on the left-hand side of the door. The other hinge is 30.0 cm up from the bottom. What horizontal force, in what direction, does the door exert on the upper hinge?
A. 6950 N, left B. 6950 N, right C. 7640 N, left D. 7640 N, right E. 15,300 N, left
If R = 3.0 k?, C = 5.0 mF, ? = 6.0 V, Q = 15 mC, and I = 4.0 mA, what is the potential difference Vb?Va?
A. ?3.0 V B. +9.0 V C. ?15 V D. +21 V E. ?6.0 V