Physics, 13.12.2019 04:31 liltweetypie08ovdod4
Residents of hawaii are warned of the approach of a tsunami by sirens mounted on the tops of towers. suppose a siren produces a sound that has an intensity level of 120 db at a distance of 2 m. treating the siren as a point source of sound, and ignoring reflections and absorption,
a. what is the sound intensity level heard by an observer at a distance of 12 m
b. what is the sound intensity level heard by an observer at a distance of 21 m?
c. how far away can the siren be heard? (i = threshold of hearing)
Answers: 2
Physics, 22.06.2019 00:30, klocke2001
Which of the following elements is in the same period as phosphorus? a. carbon c. nitrogen b. magnesium d. oxygen select the best answer from the choices provided a b c d
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Physics, 22.06.2019 11:00, taylorwhitfield6
Aperson walks first at a constant speed of 4.89 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.95 m/s. what is the average speed over the entire trip?
Answers: 1
Physics, 22.06.2019 13:20, Tess3492
It is reasonable to assume that the bulk modulus of blood is about the same as that of water (2.2 gpa). as one goes deeper and deeper in the ocean, the pressure increases by 10000 pa for every meter below the surface. if a diver goes down 80.0 m in the ocean, by how much does each cubic centimeter of her blood change in volume? give the answer in cubic centimeters (actually one cubic centimeter equals one milliliter).
Answers: 2
Residents of hawaii are warned of the approach of a tsunami by sirens mounted on the tops of towers....
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