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Two loud speakers, A and B, are separated by a distance of 2.0m. The speakers emit sound waves at a frequency of 680Hz that are precisely out of phase. The speed of sound is 343m/s. How far from speaker A along the +x axis will a point of constructive interference occur?
a circular coil consisting of a single loop of wire has a radius of 34.1 cm and carries a current of 27.6 a. it is
A skier finds that she must give hersel a push to get started down ski slopes with angles less than 8 degrees. What is the coefficient of static friction between the skis and the snow
Three objects, a disk, a spherical shell and a hoop of similar mass, M=10.0 kg, and same radius, R=5.0 cm, are released at rest from the top of an incline which makes an angle of 30o with horizon. The length of the incline is 10.0 m.
The displacement vectors 44.5 cm at 15.0° and 23.0 cm at 51.0° both start from the origin and form two sides of a parallelogram. Find the area of the parallelogram
An electron beam is accelerated during a potential of 5.0 kV such that the electrons all have essentially the same speed in the same direction. Compute the DeBroglie wavelength for the electrons.
In a mass-spring system, the mass of the object is 80g and the spring constant is 200N/m. What is the period of oscillataions for this system
A lead ball is dropped into a lake from a diving board 9.98 m above the water. How deep is the lake
Light enters a polarizing apparatus at an intensity of 100 units, Determine the angle of rotation theta
One mole of an ideal gas expands from 5 to 1 atm at 25 oC. Calculate W (a) if the gas expands isothermally, (b) and if the gas expands adiabatically.
A cyclist does work at the rate of 500 Watt while riding. Obtain how much force does her foot push with when she is traveling at 8.0 m/s
Suppose that when you ride on your 8.10-kgbike the weight of you and the bike is supported equally by the two tires. what is your weight
Waves from a radio station have a wavelength of 319 m. They travel by two paths to a home receiver 19.2 km from the transmitters. One path is a direct path, and the second is by re?ection from a mountain directly behind the home receiver.
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