Three identical capacitors are connected in parallel to a potential source (battery). If a charge of Q flows into this combination, how much charge does each capacitor carry?
A) 3Q
B) Q
C) Q/3
D) Q/9
C
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A hydrogen atom initially in the n = 6 state decays to the n = 2 state. The emitted photon is detected in a photographic plate
What is the wavelength of the detected photon? The lowest level energy state of hydrogen is -13.6 eV. (h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J, c = 3.00 × 108 m/s) A) 410 nm B) 93.8 nm C) 1090 nm D) 93.1 nm
What is the scientific community's view of the scientific value of astrology?
A) It is unscientific, because its practitioners do not understand the principles of physics or astronomy. B) It is unscientific, because its predictions have been shown to be incorrect. C) Even though its predictions are occasionally inaccurate, it does deserve to be classified as a true science. D) It is unscientific, because it does not support its theories with clear and verifiable predictions about observations. E) It is scientific, even though it is not related to the "real world" of observed phenomena.
The speed of a 4.0-kg object is given by v = (2t) m/s, where t is in s. At what rate is the resultant force on this object doing work at t = 1 s?
a. 48 W b. 40 W c. 32 W d. 56 W e. 16 W
Double-Slit Interference: If a sheet containing two very thin slits is heated (without damaging it), what happens to the angular location of the first-order interference minimum?
A. It moves toward the centerline. B. It moves away from the centerline. C. It doesn't change.