Two charges QA = +q and QB = - 3q are located on the x-axis at x= 0 and x= d respectively. Where is the electric potential equal to zero?
A)
x= 3d/4
B)
x= d/3
C)
x = d/4
D)
x= 2d/3
E)
x= d/2
C
Physics & Space Science
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A cordless phone operates at 900 MHz. What is the wavelength of the electromagnetic wave used by this phone? (c = 3.0 × 108 m/s)
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Very dry glasses; hypothesized to be meteoritic splash
A. Crater |
B. Stone meteorites |
C. Tektites |
D. Meteors |
E. Regmaglypts |
F. Meteor showers |
Physics & Space Science
What is the average orbital speed of the Earth around the Sun? (Note: r = 1.5 x 1011 m and P = 3.16 107 s)
A. About 30 km/s. | ||
B. About 4.7 km/s. | ||
C. About 9.8 m/s2. | ||
D. 365 days. | ||
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Physics & Space Science