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Helen [10]
3 years ago
7

A small omnidirectional stereo speaker produces waves in all directions that have an intensity of 8.00 at a distance of 4.00 fro

m the speaker.
At what rate does this speaker produce energy?

What is the intensity of this sound 9.50 from the speaker?

What is the total amount of energy received each second by the walls (including windows and doors) of the room in which this speaker is located?
Physics
1 answer:
slavikrds [6]3 years ago
5 0

Answer:

A. We have that radius r = 4.00m intensity I = 8.00 W/m^

total power = power/ Area ( 4πr2)= 8.00 w/m^2( 4π ( 4.00 m)2=1607.68 W

b) I = total power/ 4πr2= 8.00 W/m2 ( 4.00 m/ 9.5 m)2= 1.418 W/m2

c) E = total power x time= 1607 . 68 W x 1s= 1607.68 J

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I am Lyosha [343]

This is problem of free falling objects, which can be solved using the formula:

V = sqrt(2gy)

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Y is the height

Since Venessa is 3.5 m

Y = 30 -3.5 = 26.5 m

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3 years ago
How fast would you have to travel on the surface of earth at the equator to keep up with the sun (that is, so that the sun would
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Explanation:

It is a good idea to start with room temperature water in the calorimeter because the room temperature water helps to determine the heating up/cooling down because of the environment as the experiment takes place. Because the calorimeter heat is the same as the heat of the water.

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One wire carries a current of I1= 2 Amps, and the other carries a parallel current (same direction, wires are side by side) of I
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Answer:F=3\times 10^{-5} N

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