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Author Question: On a cold day, a piece of metal feels much colder to the touch than a piece of wood. This is due to ... (Read 180 times)

cmoore54

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On a cold day, a piece of metal feels much colder to the touch than a piece of wood. This is due to the difference in which one of the following physical properties of these materials?
 
  A) density
  B) specific heat
  C) emissivity
  D) thermal conductivity
  E) mass

Question 2

A point on the string of a violin moves up and down in simple harmonic motion with an amplitude of 1.24 mm and a frequency of 875 Hz.
 
  (a) What is the maximum speed of that point in SI units? (b) What is the maximum acceleration of the point in SI units?



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chinwesucks

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Answer to Question 1

D

Answer to Question 2

(a) 6.82 m/s (b) 3.75  104 m/s2



cmoore54

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Both answers were spot on, thank you once again




 

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