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Two wires are stretched between two fixed supports and have the same length. On wire A there is a second-harmonic standing wave whose frequecy is 660 Hz. However, the same frequency of 660 Hz is the third harmonic on wire B. (a) Is the fundamental frequecy of wire A greater than, less than, or equal to the fundamental frequency of wire B? Explain. (b) How is the fundamental frequency related to the length L of the wire and the speed v at which individual waves travel back and forth on the wire? (c) Do the individual waves travel on wire A with a greater, smaller, or the same speed as on wire B? Give your reasoning.
A fighter pilot dives his plane toward the ground at400 m/s. He pulls out of the dive on a vertical circle. What is the minimum radius of the circle
A motor is designed to operate on 117 V and draws a current of 15.0 A when it first starts up. determine the resistance of the armature coil
A sample of neon gas has its volume tripled and its temperature held constant. What will be the new pressure relative to the initial pressure
Two blocks are connected by a frictionless pulley as shown. Block A has a mass of 71 kg and block B has a mass of 150 kg. Find the acceleration a of block A (in m/s2)
Two point charges are located on the y axis, by these two charges on a third charge q3 = 7.50nC located at y3 = 0.350m ? and what is the direction of the net force
The total area of an airplane's wings is 40.0m2 and it's weight is 49.0KN. the density of air is 1.3kg/m3. calculate the speed over the bottom surface
For a particle on in a box running between x=0 and x=1 the function cos[n π x] is not a satisfactory solution. The function cos[n π x/2] is a satisfactory solution for a particle in a box running between -1 and 1. Explain
a rocket with inital mass 1000 kg adjusts its thrust byvarying the rate at which mass is ejected. the ejection speedrelative to the rocket is 30 km/s. find at what rateis mass being ejected at that instant
A student records the temperature of the gas is as he increases the pressure inside the container and plots the data in the graph shown below, How many moles of gas are inside the container
A pilot flies horizontally at 630 km/h, at height h = 48 m above initially level ground. However, at time t = 0, at what time t does the plane strike the ground
For red light (lamda = 0.64um), ni in pure water is approx 1.3 x 10^-8; for blue light (lamda = 0.48um), ni is approx 1.0x10^-9. The deep end of a typical home swimming pool is approx 2.5m deep.
A 72 kg skier is going down a slope oriented 37° above the horizontal. Determine the pressure that each ski exerts on the snow
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