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IrinaK [193]
3 years ago
15

Which statement describes how objects can be affected by a noncontact

Physics
1 answer:
stich3 [128]3 years ago
3 0

Answer: D

Explanation:

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A sound system is being set up in a gazebo in a park. It needs to produce music so that everyone can hear it. How much power wou
Agata [3.3K]

Answer:

Power of the speakers = 1.57 \times 10^{-6} W

Explanation:

There are speakers setup in a park and we have to find the power it would require to have intensity of sound to be 10^{-8} W/m^2 at a distance of 5 meter.

In one dimension the intensity is constant as the wave travels. In two or three dimensions, however, the intensity decreases as you get further from the source.

Intensity is inversely proportional to the square of the distance from the point of sound production.

Here area = 2\times \pi \times r^{2}

area = 157 m^{2}

Intensity = \frac{Power}{Area}

Power = intensity \times area

Power = 10^{-8} \times 157Power = 1.57 [tex]\times 10^{-6} W

7 0
3 years ago
Explain how the plants of a tropical rain forest contribute to the characteristic hot, humid weather associated with the area. U
Talja [164]

Answer: The atmosphere of trophic rainforest is hot and humid due to high rate of transpiration.

Explanation:

The tropical rainforest is a biome which exhibit rich biodiversity of plants and animals. The average temperatures in this region remain high with warm summer. It remains frost free. The soil is nutrient deficient. Due to hot temperature the rate of transpiration remains high as a result the concentration of the water vapors remain high. This is responsible for increasing the humidity in the atmosphere also this region receives appreciable amount of rainfall annually. The average rainfall range is 200-450 centimeters.

6 0
3 years ago
A box took 5 minutes to move you did 2150 j of work in the process. how much power was required to move the box
AURORKA [14]
Power = Work/Time

Convert 5 min to seconds and divide 2150J by that number.
4 0
3 years ago
Is sound potential or kinetic energy
qwelly [4]

Answer:

Sound energy (that is, mechanical vibrational waves passing through an elastic medium) is a combination of kinetic and potential energies. As the wave compresses the medium (storing elastic potential energy) the medium comes to rest (no motion so no kinetic energy).

Explanation:

Hope this helps :D

3 0
3 years ago
Two Mississippi companies, Howard Industries and Kuhlman Electric Company, are responsible for most of the transformers and powe
yanalaym [24]
I  think b but  im not sure just helping

5 0
3 years ago
Read 2 more answers
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