A violin with string length 32 cm and string density 1.5 g/cm ...

[formula1]

A violin with string length 32 cm and string density 1.5 g/cm resonates with the first overtone from a 2.0-m long organ pipe with one end closed and the other end open. What is the tension in the string?
 
  A) 1000 N
  B) 110 N
  C) 450 N
  D) 4100 N
  E) 56 N

Question 2

The gas in a perfectly insulated system does work at a rate of 13 W. At what rate is the internal (thermal) energy of the gas changing?
 
  A) -13 W
  B) 13 W
  C) 0.00 W
  D) 6.5 W

[jaaaaaaa]

Answer to Question 1

A

Answer to Question 2

A

[formula1]

Thanks for the timely response, appreciate it

[ryhom]

Wow, this really help