Energy in the Electric Field: A tiny particle carries a charge of 6.0 ?C. What is the energy density in the electric field at a distance of 4.0 m from this charge? (?0 = 8.85 × 10-12 C2/N ? m2, k = 1/4??0 = 9.0 × 109 N ? m2/C2)
A. 0.050 mJ/m3
B. 0.20 mJ/m3
C. 0.81 mJ/m3
D. 3.2 mJ/m3
Answer: A
You might also like to view...
The voltage 8.00 sin (400t) is applied to a series RLC circuit, with R = 200 ?, L = 0.100 H, and C = 1.00 ?F. What are the impedance Z and the phase angle ??
A. 200 ?, ?37.0° B. 566 ?, +87.0° C. 2470 ?, ?85.4° D. 2540 ?, ?88.8° E. 393 ?, ?63.0°
A lens produces a sharply focused inverted image on a screen. What would you see on the screen if the lens were removed?
A. The image would be inverted and blurry B. The image would be upright and sharp. C. The image would be upright and blurry. D. There would be no image.
In a two-slit experiment using coherent light, the distance between the slits and the screen is 1.10 m, and the distance between the slits is 0.0400 mm
If the second order bright fringe is measured to be 4.20 cm from the centerline on the screen, what is the wavelength of light? A) 200 nm B) 381 nm C) 401 nm D) 620 nm E) 763 nm
A gas in a furnace has an extinction coefficient of 0.01m^-1 and a mean beam length of 10 m. What is the transmissivity of radiation through the gas?
What will be an ideal response?