3 years ago

The effect of current electricity

Physics

1 answer:

olganol [36]3 years ago

5 0

Answer:

(3 ) friction hope this is correct

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PLS HELP ILL GIVE U A BRAINLEST

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The car on the left side picture was on the left side it moved to right in the picture on the right

Explanation:

the car moved from left to right

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3 years ago

Particle of the nucleus that has no electrical charge

Helga [31]

That would be the atom I believe.

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4 years ago

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An object has a velocity of 8 m/s and a kinetic energy of 480 J. What is the mass of the object? (Formula: )

andrezito [222]

Answer:

1/2mv^2 a(7.5 b(15 kg c(60 kg d(120 kg. nevermind i found the answer its (15 kg) because to solve for m its m= K2/v squared.

Explanation:

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3 years ago

Which of the following is most like an indicator of a chemical change

qaws [65]

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methyl orange, methyl red,phenoptalin, merhy red

Explanation:

all this following are indicators use to check the end point of a reaction

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4 years ago

To make a given sound seem twice as loud, how should a musician change the intensity of the sound?

Serhud [2]

Answer:

C. Quadruple the intensity

Explanation:

The intensity of the sound is proportional to square of amplitude of the sound.

I ∝ A²

$\frac{I_1}{A_1^2} = \frac{I_2}{A_2^2}\\\\I_2 = \frac{I_1A_2^2}{A_1^2}$

When the given sound is twice loud as the initial value, then the new amplitude is twice the former.

A₂ = 2A₁

$I_2 = \frac{I_1A_2^2}{A_1^2} \\\\I_2 = \frac{I_1(2A_1)^2}{A_1^2} \\\\I_2 = \frac{4I_1A_1^2}{A_1^2}\\\\ I_2 = 4I_1$

Thus, to make a given sound seem twice as loud, the musician should Quadruple the intensity

3 0

3 years ago