The electric field in the region defined by the y-z plane and the negative x axis is given by E = ?ax, where a is a constant. (There is no field for positive values of x.) As ?x increases in magnitude, relative to V = 0 at the origin, the electric potential in the region defined above is
a. a decreasing function proportional to ?|x2|.
b. a decreasing function proportional to ?|x|.
c. constant.
d. an increasing function proportional to +|x|.
e. an increasing function proportional to +|x2|.
e
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An ultraviolet light wave has a wavelength of 300 nm and speed of 1.8 × 10^8 m/s through a transparent medium. What is the frequency of this wave in the medium? (1 nm = 10-9 m and c = 3.00 × 10^8 m/s)
a. 7.0 × 10^14 Hz c. 6.3 × 10^2 Hz b. 6.0 × 10^14 Hz d. 10 × 10^14 Hz
The magnetic field due to the current in a long, straight wire is 8.0 ?T at a distance of 4.0 cm from the center of the wire. What is the current in the wire?
A) 0.20 A B) 0.40 A C) 0.80 A D) 3.2 A E) 1.6 A
If the lifetime of a particle is roughly inversely proportional to the relative strength of the force involved, then for the strong, electromagnetic, and weak forces, arrange the forces according to their resulting lifetimes ranging from shortest to longest lifetimes
a. strong, electromagnetic, weak b. weak, electromagnetic, strong c. weak, strong, electromagnetic d. strong, weak, electromagnetic
List these electromagnetic radiations from lowest to highest energy.
A. radio waves, ultraviolet, visible light, infrared, X-rays, gamma rays B. gamma rays, X-rays, ultraviolet, visible light, infrared, radio waves C. gamma rays, X-rays, infrared, visible light, ultraviolet, radio waves D. radio waves, infrared, visible light, ultraviolet, X-rays, gamma rays