Physics, 09.11.2021 23:30 ghadeeraljelawy
What happens as a result of an increase in the intensity of a sound wave?
A. the frequency of the sound wave increases.
B. the velocity of the sound wave decreases
C. the energy of the sound wave increases
D. the amplitude of the sound decreases
Answers: 3
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Waves that cause the most damage during an earthquake are a. surface waves c. s waves b. p waves d. ocean waves
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Physics, 22.06.2019 10:50
Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.
Answers: 3
Physics, 23.06.2019 03:00
The stopwatch used by a student to measure velocity of a pulse in a slinky was of least count 0.1 second. he stops the stopwatch when a pulse has made 3 journeys from one end to the other of the slinky. he finds the seconds hand to be at 52nd division. calculate the correct time noted by him.
Answers: 3
What happens as a result of an increase in the intensity of a sound wave?
A. the frequency of the...
Biology, 25.06.2019 10:20