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

Author Question: An electric device, which heats water by immersing a resistance wire in the water, generates 50 cal ... (Read 60 times)

jhjkgdfhk

  • Hero Member
  • *****
  • Posts: 569
on: Aug 6, 2020

Question 1

A wire (length = 2.0 m, diameter = 1.0 mm) has a resistance of 0.45Ω. What is the resistivity of the material used to make the wire?

◦
5.6 × 10−7Ω⋅ m

◦
1.2 × 10−7Ω⋅ m

◦
1.8 × 10−7Ω⋅ m

◦
2.3 × 10−7Ω⋅ m

◦
7.1 × 10−7Ω⋅ m


Question 2

An electric device, which heats water by immersing a resistance wire in the water, generates 50 cal of heat per second when an electric potential difference of 12 V is placed across its leads. What is the resistance of the heater wire? (Note: 1 cal = 4.186 J)

◦
0.94 Ω

◦
0.81 Ω

◦
0.58 Ω

◦
0.69 Ω

◦
1.5 Ω
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 jhjkgdfhk on Aug 6, 2020

potomatos

  • Sr. Member
  • ****
  • Posts: 338
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 25% of students answer this correctly


jhjkgdfhk

  • Member
  • Posts: 569
Reply 2 on: Aug 6, 2020
:D TYSM

meow1234

  • Member
  • Posts: 333
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

White tiger in water at the Singapore Zoo White tiger in water at the Singapore Zoo
How water moves through a tree How water moves through a tree
Use tap water when making coffee, tea, or juice from concentrate, and for food preparation Use tap water when making coffee, tea, or juice from concentrate, and for food preparation
. Calculate the net electric field at point B . Calculate the net electric field at point B
Water and Body Fluids Water and Body Fluids
Root uptake of soil water Root uptake of soil water
Video: Role of the urinary system - acidosis and alkalosis

For a complete list of videos, visit our video library