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netineya [11]
3 years ago
6

An electric heater is rated 1000w, 250v. calculate the resistance​

Physics
1 answer:
frez [133]3 years ago
4 0

Answer:

Correct answer: R = 62.5Ω

Explanation:

Power P = U · I = U · U/R = U²/R => P = U²/R => R= U²/P

R = 250²/1000 = 62.5Ω

God is with you!!!

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8 0
2 years ago
A block of ice of mass 4.30 kg is placed against a horizontal spring that has a force constant k = 250 N/m and is compressed a d
OleMash [197]

Answer:

W = 0.060 J

v_2 = 0.18 m/s

Explanation:

solution:

for the spring:

W = 1/2*k*x_1^2 - 1/2*k*x_2^2

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