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A bat flying in complete darkness emits high frequency sound of 100 kHz to locate objects. The sound travels with a speed of 340 m/s in air. What is the frequency in which the bat is received? Please show work for best and first rated answer.
An arteriole has a length of 1.03 mm and a radius of 24.7 %u03BCm. Calculate the resistance of the arteriole
A 13 kg bucket of water of is suspended by a rope wrapped around a windlass that is a solid cylinder 0.400 m in diameter with mass 14.0 kg. The cylinder is pivoted on a frictionless axle through its center.
A light source moves toward a receiver with speed v. If the source emits light with a frequency f0, what is the frequency of the received signal for a source of 220nm
Find the speed of a satellite moving in a circular orbit just above the surface of Mars. Mars has a radius of 3.40 106 m and a mass of 6.42 1023 kg
A neutral conductor completely encloses a hole inside of it. you observe that the outer surface of this conductor carries a charge of -12 microC. A) can you conclude that there is a charge inside the hole? b) how much charge is on the inner surfac..
two infinite, parallel planes have excess charge densitites o and -2o, what are the magnitude and direction of the electic field between the planes
consider two ZAMS stars: 09 and B0. The effective temperature of the 09 star is 34,500 k. Assuming a hydrogen density of 10^8 m^-3, and Alpha = 3.1 x 10^-19 m^3 s^-1, estimate the Stromgren radius of the stars in pc and AU
A hiker determines the length of a lake by listening for the echo of her shout reflected by a cliff at the far end of the lake. Estimate the length of the lake
A pipe is open at both ends. The pipe has resonant frequencies of 528 Hz and 660Hz (among others). Find two possible values for the length of the pipe
A planar electromagnetic wave is propagating in the +x direction. What is the Poynting vector at the point P at that instant
An ideal 0.15-H inductor and a capacitor are connected in series with an ideal 60-Hz generator. Find the capacitance and the rms current in the circuit
A high energy photon is scattered at an angle of ? =180.0° from an electron that is initially at rest. Find the energy of the incident X-ray photon
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