This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The heating coil of a hot water heater has a resistance of 20 ohms and operates at 210 V. If ... (Read 57 times)

ap345

  • Hero Member
  • *****
  • Posts: 537
on: Jul 28, 2018
The heating coil of a hot water heater has a resistance of 20 ohms and operates at 210 V. If electrical energy costs 5.5 cents per kW-hr, what does it cost to raise the 200 kg of water in the tank from 15C to 80C? (The specific heat of water is 4 186 J/kgC)

Question 2

A high-voltage transmission line carries 1 000 A at 700 kV for a distance of 100 miles. If the resistance per length in the wire is 0.5 W/mile, what is the power loss due to resistive losses?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

emily12345

  • Sr. Member
  • ****
  • Posts: 321
Reply #1 on: Jul 28, 2018
Answer to Question 1

83 cents

Answer to Question 2

50 MW


ap345

  • Member
  • Posts: 537
Reply 2 on: Jul 28, 2018
Gracias!

Alyson.hiatt@yahoo.com

  • Member
  • Posts: 354
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

The roles of transpiration, cohesion, adhesion, and tension in long-distance water transport. The roles of transpiration, cohesion, adhesion, and tension in long-distance water transport.
Water Hole Water Hole
A fluorescent trouble light operates cooler and is safer to use in the shop because it is protected ... A fluorescent trouble light operates cooler and is safer to use in the shop because it is protected ...
Measuring the resistance of a spark plug wire with a multimeter set to the ohms position. The ... Measuring the resistance of a spark plug wire with a multimeter set to the ohms position. The ...
Prophase Chromosomes coil up and condense; centrioles divide and move apart Prophase Chromosomes coil up and condense; centrioles divide and move apart
Elephant (Loxodonta africana) herd drinking at water hole. Etosha National Park, Namibia. Elephant (Loxodonta africana) herd drinking at water hole. Etosha National Park, Namibia.
Video: Kidney Stones

For a complete list of videos, visit our video library