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Sound travels at a speed of 343 m/s in air at 20.0 oC. The wavelength of a sound wave is 1.31 m.
1. Find the frequency of the wave.
2. Find the period of the wave.
Three equal point charges, each with charge 1.70 µC, are placed at the vertices of an equilateral triangle whose sides are of length 0.450m. What is the electric potential energy U of the system
Find the ratio of the heat loss due to conduction to the heat loss due to the radiation. Assume the emissivity of 1.0 and the thermal conductivity of cup of 2 x 10-4 cal/cm.s.°C. 1 x 10-3.
A model rocket blasts off from the ground, rising straight upward with fix acceleration that has a magnitude of 86.7m/s2 for 1.79 sec, Find what maximum altitude will the rocket reach
An AC generator supplies an rms voltage of 230 V at 50.0 Hz. It is connected in series with a 0.650 H inductor, a 6.00 ?F capacitor, What is the peak voltage across the capacitor
If a current of 80.0 mA exists in a metal wire, In what direction do the electrons travel with respect to the current
Steam can cause more serious burns than water at the same temperature. Here we want to examine this effect quantitatively, noting that flesh becomes badly damaged when its temperature reaches 50.0 oC.
A jet plane passes over you at a height of 5110 m and a speed of Mach 1.31. (a) Discover the Mach cone angle. (b) How long after the jet passes directly overhead does the shock wave reach you? Use 331 m/s for the speed of sound.
Explain the intuition of how each of the following changes affect the real exchange rate, re :a fall in P M ,a fall in P US , and a fall in e. In each case, describe the impact of the change on the rate at which Mexican goods trade against U.S. go..
A string that is 0.15m long and fixed at both ends is vibrating in its n =5 harmonic. The sound from the string excites a pipe that is 0.82 m long and opens at both ends into its second overtone resonance. What is the distance between a node and adja..
Transverse waves travel with a speed of 23.0 m/s in a string under a tension of6.20 N. What tension is required for awave speed of 30.0 m/s in the same string
A future space station in orbit about the earth is being powered by an electromagnetic bean from the earth. The beam has a cross-sectional area of 135m2 and transmits and average power of 1.20*104W. What is the intensity of this beam, the maximum val..
A force FT is applied to a cord wrapped around a pulley with moment of inertia I = 0.295 kg · m2 and radius R0 = 33.0 cm, what is the linear speed of a point on its rim 7.0 s later
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