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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 79 times)

cmoore54

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on: Jul 29, 2018
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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Reply #1 on: Jul 29, 2018
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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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


chinwesucks

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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