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 48 times)

frankwu

  • Hero Member
  • *****
  • Posts: 549
on: Aug 6, 2020

Question 1

An aluminum wire of cross-sectional area 4.0 mm2 is carrying a current of 8.0 A. The density of aluminum is 2.7 g/cm3, and its molar mass is 27 g. Assuming one free electron per aluminum atom, what is the drift speed of the electrons in this wire?


Question 2

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 15°C to 80°C? (The specific heat of water is 4 186 J/kg°C)
Physics for Scientists and Engineers ¦ Serway, Jewett ¦ 9th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by frankwu on Aug 6, 2020

Jayson

  • Sr. Member
  • ****
  • Posts: 350
Reply #1 on: Aug 6, 2020
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.
Answer Preview
Only 29% of students answer this correctly


frankwu

  • Member
  • Posts: 549
Reply 2 on: Aug 6, 2020
Excellent

jojobee318

  • Member
  • Posts: 298
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Did you know?

According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Walruses leaving the water Walruses leaving the water
All brakes should be moistened with water or solvent to help prevent brake dust from becoming ... All brakes should be moistened with water or solvent to help prevent brake dust from becoming ...
Waterspouts are tornadoes that occur over warm-water bodies, instead of over land. Waterspouts are tornadoes that occur over warm-water bodies, instead of over land.
Ice, liquid water, and water vapor Ice, liquid water, and water vapor
Carbon Monoxide and Water Molecules Interaction Carbon Monoxide and Water Molecules Interaction
Water Helps Regulate Your Body Temperature Water Helps Regulate Your Body Temperature
Video: Stroke volume - contractility definition

For a complete list of videos, visit our video library