3 years ago

Why does magnet 5 float above magnet 4

Physics

1 answer:

4vir4ik [10]3 years ago

8 0

Because the same sides(N and N, or S and S) are facing each other in magnet 4 and 5. Also in magnet 2 and 3.

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Find the noise level of a sound having an intensity of 1.5x10^-14W/m^2 given I0=10^12 W/m2

Llana [10]

Answer:

Noise level will be -18.2 watt

So option (b) will be correct answer

Explanation:

We have given sound intensity $I=1.5\times 10^{-14}w/m^2$

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So option (b) will be correct answer

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3 years ago

Electric charges come in two forms: positive and negative. What combinations of charges will attract and repel each other?

sammy [17]

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3 years ago

Suppose a sound wave and an electromagnetic wave have the same frequency. Which has the longer wavelength?

ivann1987 [24]

Answer:

Electromagnetic wave has longer wavelength.

Explanation:

The velocity (v) of a wave is the product between frequency (f) and wavelength (λ):

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3 years ago