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

Author Question: In grinding a steel knife blade (specific heat = 0.11 cal/g-C), the metal can get as hot as 400.C. ... (Read 45 times)

mckennatimberlake

  • Hero Member
  • *****
  • Posts: 559
on: Jul 27, 2018
In grinding a steel knife blade (specific heat = 0.11 cal/g-C), the metal can get as hot as 400.C. If the blade has a mass of 80. g,
 
  what is the minimum amount of water needed at 20C if the water is not to rise above the boiling point when the hot blade is quenched in it?

Question 2

What is the area of a circle of radius 1.119 m?
 
  A) 3.934 m2
  B) 3.93 m2
  C) 3.9338 m2
  D) 3.93378 m2
  E) 3.937 m2


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

macmac

  • Sr. Member
  • ****
  • Posts: 343
Reply #1 on: Jul 27, 2018
Answer to Question 1

33 grams

Answer to Question 2

A


mckennatimberlake

  • Hero Member
  • *****
  • Posts: 559
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


macmac

  • Sr. Member
  • ****
  • Posts: 343
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Accompanying Markers in Specific P1 Transductions Accompanying Markers in Specific P1 Transductions
Spectra of a Metal-Poor and a Metal-Rich Star Spectra of a Metal-Poor and a Metal-Rich Star
Time Estimates for Specific Office Procedures Cont. Time Estimates for Specific Office Procedures Cont.
A Hall-effect sensor produces a digital on-off voltage signal whether it is used with a blade or a ... A Hall-effect sensor produces a digital on-off voltage signal whether it is used with a blade or a ...
Heat Transfer Mechanisms Heat Transfer Mechanisms
Mediator as a bridge between gene-specific regulatory factors and the general transcription Mediator as a bridge between gene-specific regulatory factors and the general transcription
Video: Types of synapses - electrical & chemical

For a complete list of videos, visit our video library