SSM WWW Figure 23-42 is a section of a conducting rod of radius R 1 = 1.30 mm and length L = 11.00 m inside a thin-walled coaxial conducting cylindrical shell of radius R 2 = 10.0 R 1 and the (same) length L . The net charge on the rod is Q 1 = +3.40 × 10 −12 C; that on the shell is Q 2 = −2.00 Q 1 . What are the (a) magnitude E and (b) direction (radially inward or outward) of the electric field at radial distance r = 2.00 R 2 ? What are (c) E and (d) the direction at r = 5.00 R 1 ? What is the charge on the (e) interior and (f) exterior surface of the shell? Figure 23-42 Problem 29.
SSM WWW Figure 23-42 is a section of a conducting rod of radius R 1 = 1.30 mm and length L = 11.00 m inside a thin-walled coaxial conducting cylindrical shell of radius R 2 = 10.0 R 1 and the (same) length L . The net charge on the rod is Q 1 = +3.40 × 10 −12 C; that on the shell is Q 2 = −2.00 Q 1 . What are the (a) magnitude E and (b) direction (radially inward or outward) of the electric field at radial distance r = 2.00 R 2 ? What are (c) E and (d) the direction at r = 5.00 R 1 ? What is the charge on the (e) interior and (f) exterior surface of the shell? Figure 23-42 Problem 29.
SSM WWW Figure 23-42 is a section of a conducting rod of radius R1 = 1.30 mm and length L = 11.00 m inside a thin-walled coaxial conducting cylindrical shell of radius R2 = 10.0R1 and the (same) length L. The net charge on the rod is Q1 = +3.40 × 10−12 C; that on the shell is Q2 = −2.00Q1. What are the (a) magnitude E and (b) direction (radially inward or outward) of the electric field at radial distance r = 2.00R2? What are (c) E and (d) the direction at r = 5.00R1? What is the charge on the (e) interior and (f) exterior surface of the shell?
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Required information
The radius of the Moon is 1.737 Mm and the distance between Earth and the Moon is 384.5 Mm.
The intensity of the moonlight incident on her eye is 0.0220 W/m². What is the intensity incident on her retina if the
diameter of her pupil is 6.54 mm and the diameter of her eye is 1.94 cm?
W/m²
Required information
An object is placed 20.0 cm from a converging lens with focal length 15.0 cm (see the figure, not drawn to scale). A
concave mirror with focal length 10.0 cm is located 76.5 cm to the right of the lens. Light goes through the lens, reflects
from the mirror, and passes through the lens again, forming a final image.
Converging
lens
Object
Concave
mirror
15.0 cm
-20.0 cm-
10.0 cm
d cm
d = 76.5.
What is the location of the final image?
cm to the left of the lens
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Required information
A man requires reading glasses with +2.15-D refractive power to read a book held 40.0 cm away with a relaxed eye.
Assume the glasses are 1.90 cm from his eyes.
His uncorrected near point is 1.00 m. If one of the lenses is the one for distance vision, what should the refractive power of the other
lens (for close-up vision) in his bifocals be to give him clear vision from 25.0 cm to infinity?
2.98 D
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