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A bat emits a sound whose frequency is 72.6 kHz. The speed of sound in air at 20.0 oC is 343 m/s. However, the air temperature is 39.5oC, so the speed of sound is not343 m/s. Suppose that air behaves like an ideal gas, and find what is the wavelength of the sound.
One particle has a mass of 4.00 10-3 kg and a charge of +9 µC. A second particle has a mass of 7.00 10-3 kg and the same charge. Find the initial separation between the particles
A body of mass M is initially at rest, Find the expression for the instantaneous power delivered to the body as a function of time
A railroad car of mass 2.00 x 10^4 kg moving at 3.00 m/s collides and couples with two coupled railroad cars, What is the speed of the three coupled cars after the collision
a penny is dropped from rest from the top of the chrysler building in new york city. considering that the height of the
A 4.0mW laser beam has its electric field vertical. what's the power of the transmitted beam
Then, a thin conducting wire connects the spheres, redistributing the charge on each sphere. When the wire is removed the spheres still repel but with a force of F2 = 0.100 N. Using this information, find the initial charge on each sphere, q1 and ..
a nonreflective coating n 1.24 covers the glass n 1.52 of a camera lens. assuming that the coating prevents
two strings of identical mass and length are stretched with their ends fixed but the tension in one string is 1.10
The maximum intensity per unit wavelength of an ideal blackbody occurs at the same wavelength as the electromagnetic radiation absorbed in a transition from the fourth excited state to the sixth excited state in a hydrogen atom
John measured the thickness of a book using a measuring stick. Calculate the mean thickness of the book
q1. a curve of radius 40 m is banked for a design speed of 100 kmh. if the coefficient of static friction is 0.30 wet
A cylindrical copper cable carries a current of 1380 A. There is a potential difference of 1.6 10-2 V between two points on the cable that are 0.21 m apart. What is the radius of the cable
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