{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

11_pdfsam_Phy63S10-Q1-4-Solutions

# 11_pdfsam_Phy63S10-Q1-4-Solutions - Phy63 Spring 2010(DiZth...

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Phy63 Spring 2010 (DiZth k=21tl7t = E = Emaxcos(kx — mt) E/B = c c = 3x108 m/s 5 z (E x‘B)/tto I = \$an = Emax max/(2144,) I x 41 o cosz(¢/2) q) = 21: d sine/7L d sine = 111). d sine = (m + 1/91 —— 22.; .\,x?,_ 21:5 €173.32 JG 3m (133,8? «’1? 4.12 1. Rays of sunlight parallel to the x-axis and of spatially uniform intensity shine from the left to right; Two identical, cone-shaped objects, each with its side at 450 angle with respect to the base are placed with the tip toward the sunlight (pointing to the left). One cone surface absorbs the light completely, while the other reﬂects the light completely. The two objects experience the same radiation force (1 point): 2. A "sun" of radius 1 km shines uniformly in all directions. A planet, 106 km away, detects an intensity of 0.751: kW/mAZ (while directly facing this sun). At the surface of this sun, the maximum amplitude of the magnetic ﬁeld is approximately (2 points): I °< '67:,“ ":> ICr: SILT-Pa.“ «C Sun): 0.75m'i0‘7, kg M a. 'RT 7— “L I 1.4 T - gamma 3.“)? M F f' . 3M3 3. I s = “5% c._ 10’3n'r ' _‘ ' 9WD _ '01-le40 d. 1_4x'10_3ﬂ 3m: 0.15mi newly” 2 Mi 7 ‘ 3.9/8 . e. 0.047 7': T .. _ . .. Bel?“ ”(WW5 ll 1‘: ...
View Full Document

{[ snackBarMessage ]}