In grinding a steel knife blade (specific heat = 0.11 cal/g-C), ...

[mckennatimberlake]

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

[macmac]

Answer to Question 1

33 grams

Answer to Question 2

A

[mckennatimberlake]

Both answers were spot on, thank you once again

[macmac]

Great! Please up vote