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spayn [35]
3 years ago
6

What’s the awnser to that question

Physics
1 answer:
pishuonlain [190]3 years ago
3 0
B) force down = F g ( gravity) Force up = F air resistance
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At the end of one full time period, the ant has returned to where it was at the beginning of the time period. Its displacement is <em>zero</em>.

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A wave of amplitude 20mm has intensity Ix. Another wave of the same frequency but of amplitude 5mm has an intensity Iy.
Alexeev081 [22]

Answer:

(C) 16

Explanation:

Given:

The amplitude of first wave (s₁) = 20 mm

The amplitude of second wave (s₂) = 5 mm

Intensity of first wave = Iₓ

Intensity of second wave = I_y

The intensity associated with a wave depends on the amplitude of the wave.

The intensity (I) is directly proportional to the square of the amplitude (s) of the wave and is expressed as:

I=ks^2\\Where\ k\to constant\ of\ proportionality

Now, the intensities of the two waves are given as:

I_x=ks_1^2=k(20)^2\\\\I_y=ks_2^2=k(5)^2

Dividing both the intensities, we get:

\frac{I_x}{I_y}=\frac{k(20)^2}{k(5)^2}\\\\\frac{I_x}{I_y}=\frac{400}{25}\\\\\frac{I_x}{I_y}=16

Therefore, the option (C) is correct.

5 0
3 years ago
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