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2 years ago

8

The wavelengthâ (w) of a wave varies inversely as its frequencyâ (f). a wave with a frequency of 800 khzâ (kilohertz) has a leng

th of 171m. what is the length of a wave with a frequency of 900 âkhz?

1 answer:

NeX [460]2 years ago

3 0

Using πF = π1F1
800×171 = 900× π1
π1 = (800×171)/(900) = 152m
π1 = 152m

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3 years ago

8. John has to hit a bottle with a ball to win a prize. He throws a 0.4 kg ball with a velocity of 18 m/s. It hits a 0.2 kg bott

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<u>Answer:</u> The ball is travelling with a speed of 5.5 m/s after hitting the <u>bottle.</u>

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To calculate the speed of ball after the collision, we use the equation of law of conservation of momentum, which is given by:

$m_1u_1+m_2u_2=m_1v_1+m_2v_2$

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1 year ago

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Answer:

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Explanation:

Part 1

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where V_i and V_f is initial and final volume respectively

and P_i and P_f are initial and final pressure

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Part 2

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$T_f = 260*[\frac{151}{80.6}]^ {(1.38-1)}$

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Part 3

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Explanation: it’s the answer. :)

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2 years ago

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