physics homework help.. 6 numericles

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Hw #2 (supersituation and electromagnetic prospers): extra confidence bearings2
An electric-dipole antenna is located on the roof of a 233-m-high construction and is oriented
vertically. An witness on the basis appraises the ardor of the radiation from the antenna
and experiences 8.67 mW/m2. This witness is 1.11 km far from the antenna. A second witness
hovers in a blimp at an verticality of 573 m and appraises the radiation ardor from the antenna
when she is 1.35 km from the antenna. What ardor, in milliwatts per balance meter, does she
measure?
Hw #3 (the prosper creation of buoyant): extra confidence bearing 1.
The distribution coefficient of a representative is dn/d? = ?19.9 × 10?5 nm?1, such that n0 = 1.500
when ?0 = 545.0 nm. If ? is the obliquity turn, what is the arbitrary rate of the angular
separation of the refracted radiates done by this representative to a radiate containing prosperlengths
betwixt ?1 = 471.0 nm and ?2 = 609.0 nm if its turn of impact on the representative is 52.65°?
Hw #4 (Interference and diffraction) bearing 2
Soap bubbles can flaunt important colors, which are the remainder of the repaird thought of
buoyant of feature prosperlengths from the bubbles’ moles. Control a soap disruption with apostacy of
obliquity of 1.08, experience the partiality mole corpulence that end repmotive the thought of buoyant of
waveextension 705 nm in motive.
Hw #8 (relativity): bearings 1, 2, 3
1Brace students, Nora and Allison, are twain the selfselfsimilar generation when Allison hops aboard a soaring saucer
and blasts unstudied to end a cruising urge of 0.830c control 27.5 years globular offend (according to
Allison). Neglecting the brief season periods required control the aid of the ship during
blastunstudied and turnarounds, experience the destruction in generation betwixt Nora and Allison when they are
reunited.
Who is younger?
2A 2.71-m-long rod, as appraised in its pause establish, urges by you longitudinally at 6.15 × 107 m/s.
You appraise its extension as it byes. By how divers millimeters do you enumerate the rod has
contracted?
3An interstellar career supervisor (M) is enigmatical to parallel the work of brace strange spacecar
models. Brace give-ins are fixed up 47.5 m to the equitable and left of the supervisor. Spacecar A comes from
the left, and spacecar B comes from the equitable. To the supervisor, the brace spacecars show to by
the give-ins at the selfselfsimilar second and then by by her conjointly a consequence later. She then
determines that the urge of twain spacecars is 0.490c. What season did she appraise control each car
to migration from the give-in to her situation?
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