Part A = 0.26 s

If the string is 9.5 m long, has a mass of 55 g and is pulled taut with a tension of 7.5 N, how much time does it take for a wave to travel from one end of the string to the other?

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Part A = Increases

Part B = +1

Part C = θ_{2} > θ_{1}

Part D = θ_{2} < θ_{1}

Part E = Just pick the material with the greatest index of refraction

Part F = Increases up to a maximum value of 90 degrees.

Part G = 0.7297 radians

When light propagates from a material with a given index of refraction into a material with a smaller index of refraction, the speed of light

What is the minimum value that the index of refraction can have?

etc …

Part A = 10 dB

Part B = 20 dB

Part C = 3,6,9 dB

What is the sound intensity level Β, in decibels, of a sound wave whose intensity is 10 times the reference intensity (i.e., I = 10I_{0})?

What is the sound intensity level Β, in decibels, of a sound wave whose intensity is 100 times the reference intensity (i.e., I = 100I_{0})?

Calculate the change in decibels (ΔΒ_{2}, ΔΒ_{4}, and ΔΒ_{8}) corresponding to f = 2, f = 4, and f = 8.

Part A = E

Two identical pulses are moving in opposite directions along a stretched string that has one fixed end and the other movable, as shown in the figure. Initially, the pulses are moving away from each other.

Which sequence correctly represents the displacement of the string as the pulses interfere?

Part A = θ_{TA} – θ_{0}

Part B = θ_{TA}

Part C = 18.7 W/m^{2}

Part D = I_{0} = 2I = 5.81760

Part E = I_{2} = 0I_{0} = 0

Part F = See below

A beam of polarized light with intensity I_{0} and polarization angle θ_{0} strikes a polarizer with transmission axis θ_{TA}. What angle θ should be used in Malus’s law to calculate the transmitted intensity I_{1}?

Part A = d = 3.10 mm

Part B = d = 1660 m

A standard 14.16-inch (0.360-meter) computer monitor is 1024 pixels wide and 768 pixels tall. Each pixel is a square approximately 281 micrometers on each side. Up close, you can see the individual pixels, but from a distance they appear to blend together and form the image on the screen.

If the maximum distance between the screen and your eyes at which you can just barely resolve two adjacent pixels is 1.30 meters, what is the effective diameter d of your pupil?

Assuming the screen looks sufficiently bright, at what distance can you no longer resolve two pixels on diagonally opposite corners of the screen, so that the entire screen looks like a single spot?