Consider two tight strings, String A and String B. A wave travels on String A with a speed four times greater than the speed of a wave on String B. String A has twice the tension as String Which of the following is the ratio of densities of the strings: Ratio = FA HB 2 1 1/2 1/8 O 0000

Suppose the 50 turn coil in the figure below lies in the plane of the page and originally has an area of 0.230 m². It is stretched to have no area in 0.100 s. X Bin XBin X V What is the direction? clockwise X counterclockwise X X What is the magnitude (in V) of the average value of the induced emf if the uniform magnetic field points into the page and has a strength of 1.75 T? X X 192 X

The middle C string on a piano is under a tension of 989 N. The period and wavelength of a wave on this string are 3.82 ms and 1.39 m, respectively. Find the linear density of the string. Number Units

The speed of a wave in a guitar string might depend on several factors: the mass M of the string, the length L of the string, the tension force T in the string. Applying Newton's Second Law for a small displacement u of the string from equilibrium gives M 8² u = T L Ət² What is the speed c of waves in the string? O M O LT M LT LT M O LT V M OL T O none of these J²u əx²