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leva [86]
4 years ago
7

A student drops a rock from a bridge to the water 11.5 m below. With what speed does the rock strike the water? The acceleration

of gravity is 9.8 m/s 2 . Answer in units of m/s.
Physics
1 answer:
Rina8888 [55]4 years ago
4 0
<span>Answer: v = sq-root 2*11.5*9.8 ( m/s ) v = 14 m/s</span>
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You want the current amplitude through a 0.450-mH inductor (part of the circuitry for a radio receiver) to be 1.90 mA when a sin
faust18 [17]

Answer:

Frequency required will be 2421.127 kHz

Explanation:

We have given inductance L=0.450H=0.45\times 10^{-3}H

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Voltage v = 13 volt

Inductive reactance of the circuit X_l=\frac{v}{i}

X_l=\frac{13}{1.9\times 10^{-3}}=6842.10ohm

We know that

X_l=\omega L=2\pi fL

2\times 3.14\times  f\times 0.45\times 10^{-3}=6842.10

f = 2421.127 kHz

6 0
3 years ago
Can you help me with this paper please I will give you 20 points!
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6 0
3 years ago
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A plane travels at a speed of 205mph in still air. Flying with a tailwind, the plane is clocked over a distance of 1000 miles. F
vaieri [72.5K]

While plane is moving under tailwind condition it took time "t"

so here we will have

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6 0
3 years ago
How should scalar symbols be written? A. in bold type B. in italic type C. with an arrow on top D. in bold type or with an arrow
Gemiola [76]
D is the correct answer..........
8 0
3 years ago
Could someone help me with this question please?
BabaBlast [244]
You are correct...amplitude will be the answer
3 0
4 years ago
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