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Author Question: An aluminum electric tea kettle with a mass of 500 g is heated with a 500-W heating coil. How long ... (Read 35 times)

ec501234

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on: Jul 29, 2018
An aluminum electric tea kettle with a mass of 500 g is heated with a 500-W heating coil. How long will it take to heat up 1.0 kg of water from 18C to 98C in the tea kettle?
 
  The specific heat of aluminum is 900 J/kg  K and that of water is 4186 J/kg  K.
  A) 5.0 minutes
  B) 7.0 minutes
  C) 12 minutes
  D) 15 minutes
  E) 18 minutes

Question 2

A 120-V rms signal at 60.0 Hz is applied across a series combination of a 30.0-mH inductor and a resistor. If the rms value of the current in this circuit is 0.600 A, what is the resistance of the resistor?
 
  A) 200  B) 143  C) 80.0  D) 30.0  E) 268
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k2629

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Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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ec501234

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Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

nanny

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Reply 3 on: Yesterday
Gracias!

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