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REY [17]
3 years ago
7

Explain how waves are used to transmit and capture data PLEASE ANSWER SOON ITS MY FINAL

Physics
1 answer:
zzz [600]3 years ago
7 0

Answer:asdf

Explanation:

adfasdfasdfasdfasdfasdfadsfadfs

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A kettle is rated at 1 kW, 220 V. Calculate the working resistance of the kettle.
Anna [14]

Explanation:

Power of electric kettle, P = 1 kW

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(a) Electric power is given by the formula as follows :

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R=\dfrac{V^2}{P}\\\\R=\dfrac{(220)^2}{10^3}\\\\R=48.4\ \Omega

(b) When connected to a 220 V supply, it takes 3 minutes for the water in the kettle to reach boiling point.

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