The intensity of a sound wave at some distance from a speaker vibrating at 1.0 k

Question

The intensity of a sound wave at some distance from a speaker vibrating at 1.0 kHz is a0.06 W/m2. Determine the intensity of sound at the same distance if its frequency is increased to 1.2 kHz while the displacement amplitude is doubled. 0.470 W/m2 0.540 W/m2 0.201 W/m2 0.406 W/m At what maximum distance can a photo camera theoretically distinguish two automobile headlights separated by 1.5 meters? Assume the opening of the ins diaphragm of the lens has a diameter of 0.5 cm and yellow headlights seen at wavelength 500 nm. 13.1 km 13.9 km 15.8 km 12.3 km 11.5 km A diatomic nitrogen gas initially at 82 degree C expands so that no heat is exchanged with the environment during the process. If the volume increases form 1.1 L to 1.5 L. determine the final temperature of the gas. 33.5 degree C 27.3 degree C 40.6 degree C 5.3 moles of an ideal gas expand at a constant temperature of 22 degree C from an initial volume of 2.3 m3 to 8.5 m3. How much heat is added to the gas? During a reversible adiabatic expansion of an ideal gas, which of the following is NOT true? The temperature of n moles of an ideal monatomic gas is increased by DeltaT at constant pressure. The energy Q absorbed as heat, change DeltaEint in internal energy, and work W done by the gas are given by: One mole of an ideal gas expands reversibly and isothermally at temperature T until its volume is doubled. The change of entropy of this gas for this process is: An ideal gas has a pressure of 1 kPa and a volume of 1 m3. It increases in pressure isovolumetrically to 3 kPa. then increases in volume isothermally to 3 m3, and finally is compressed isobarically to its original volume. What is the total work done by this cycle? (Draw a PV-diagram to better understand the problem.) 1.30 kj 2.55 kJ 3.28 kJ 4.05kJ 5.75 kJ A Carnot cycle removes 1200 J from a reservoir at 150 degree C. How much of this heat does it dump into a reservoir at 10 degree C? 661 J 782 J 803 J 945 J 1090 J

Explanation / Answer

Follow the numbers in this question.

The intensity of a sound wave at a fixed distance from a speaker vibrating at 1.48 kHz is 0.633 W/m^2. Calculate the intensity if the frequency is reduced to 0.523 kHz and the displacement amplitude is doubled. Answer in W/m^2.

Answer:

J' / J = (?'

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