You’re inside a metal building that blocks radio waves, but you’re trying to make a call with your cell phone, which broadcasts at a frequency of 950 MHz. Down the hall from you is a narrow win- dow measuring 35 cm wide. What's the horizontal angular width of the beam (i.e., the angle between the first minima) from your phone as it emerges from the window?

Problem 18: A car is traveling North on a straight road, towards two radio transmission towers, S1 and S2. Transmitter S1 is located very close to the road; S2 is located at some distance d to the East of S1. (Draw this!) The two transmitters are oscillating in phase at a frequency of 91.7 MHz, sending out radio wave crests and troughs in synchrony. The car radio is tuned to the 91.7 MHz radio station and receives a strong radio signal when the car is still several km away from Sı and S2. However, as the car approaches the transmitters, the radio signal gets weaker, and the radio signal disappears altogeter, due to destructive interference, when the car reaches a distance of 690 m from S1. What is the distance, d, between the two radio transmitters? Hints: Consider the pathlength difference, Al := l2 – l1, where l2 is the distance from S2 to the car and and l1 is the distance from S1 to the car. (1) Initially, when the car is very, very far away from S1, i.e., in the limit l1 → ∞, the…

Three polarizing plates whose planes are parallel are centered on a common axis. The directions of the transmission axes relative to the common vertical direction are shown in the figure below. A linearly polarized beam of light with plane of polarization parallel to the vertical reference direction is incident from the left onto the first disk with intensity I; = 15.0 units (arbitrary). Calculate the transmitted intensity I, when 0₁ = 21.0°, 0₂ = 43.0°, and 83 = 55.0°. Hint: Make repeated use of Malus's law. If = | units Need Help? I; Read It 0₁ Master It 0₂ 08

A general expression for the electric field associated with a monochromatic plane wave is E(r,t) = e.Excos(@t-k-r). Give the numerical values of Eo, w, and k (with units, and direction for vector quantities) for the case where the plane wave has a wavelength of 350 nm in vacuum, the refractive index of the medium is n = 1.46, the electric field lies in the yz plane, and the intensity is 2.0 MW/m². Use time in units of s and distance in units of m.

An incident beam consisting of white light (falsely colored as an orange ray) passes through a quadrilateral prism, like the one shown in the figure below. What is the angle n of the outgoing beam? Assume the prism's index of refraction is n = 1.72. Just to be clear, the angles at each of the vertices of the quadrilateral prism are 78.7°, 107°, 113°, and 61.30. The angle of incidence is 27.0° air $27.00 78,7 107 air prism 13° 61.3 air

Galaxies are moving apart due to the expansion of the universe. Suppose another galaxy-approximated as a sphere-is moving away from us at 3.00 x 106 m/s. How will an Earth-bound observer with access to extremely high resolution equipment perceive the other galaxy's shape? It will appear as a sphere to the Earth-bound observer with its dimensions unchanged. a It will appear as a sphere to the Earth-bound observer, with all dimensions stretched b proportionally to the relativistic factor. It will be stretched in the direction of travel away from Earth proportionally to the relativistic factor. It will be compressed in the direction of travel away from Earth proportionally to the d relativistic factor.

You are at a large outdoor concert, seated 300 m from the speaker system.The concert is also being broadcast live via satellite. Consider a listener 5000km away from the satellite. Who hears the music first, and by what time difference? (v sound = 340 m/s, v radio = 3x10 8 m/s)

A bulb emits light ranging in wavelength from 1.04E-7 m to 6.04E-7 m. What is the minimum wave vector of the light (in rad/m)?

Calculate the distance (in cm) that the moving mirror of the interferometer must travel in order to "barely resolve" the two emission lines of sodium at 5889.95 A and 5889.92 A (1A = 10-8 cm)

Consider two EM waves of the same frequency. One (f1) has three times the amplitude of the other (f2).  What is the ratio of the energies contained within the waves? Express your answer as a ration, i.e., 5/2, 6/1, etc.