If the dielectric breakdown field in air is 3 × 10^6 V/m, what potential difference is involved with a 3 cm spark?
a. 1.0 × 10^8 V
c. 9 × 10^4 V
b. 9 × 10^6 V
d. 1.0 × 10^10 V
C
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Muons at speed 0.9994c are sent round and round a circular storage ring of radius 1500 m. If a muon at rest decays into other particles after an average T = 2.2 × 10^-6 s, how many trips around the storage ring do we expect the 0.9994c muons to make before they decay?
a. 2 c. 0.2 b. 4 d. 6
Two continuous waves having the same wavelength and amplitude pass through the same medium. They are aligned crest to crest and trough to trough so that they interfere. The resulting wave has
A) the same wavelength and the same amplitude. B) twice the wavelength and twice the amplitude. C) zero amplitude. D) twice the wavelength and the same amplitude (or height) as each of the individual waves. E) the same wavelength and twice the amplitude.
Albedo changes may result from ______________ pollution
Fill in the blank(s) with correct word
If a metal contains 1028 free electrons, the number of different quantum states (nx, ny, and nz) is equal to:
(a) 1028 (b) 2×1028 (c) 0.5×1028 (d) 1