A mass of 2.0 kg hangs from a spring with a force constant of 50 ...

[Ebrown]

A mass of 2.0 kg hangs from a spring with a force constant of 50 N/m. An oscillating force F = (4.8 N) cos(3.0 rad/s)t is applied to the mass. What is the amplitude of the resulting oscillations? Neglect damping.
 
  A)
 
  0.15 m
 
  B)
 
  0.30 m
 
  C)
 
  1.6 m
 
  D)
 
  2.4 m
 
  E)
 
  0.80 m

Question 2

In an isochoric process, the internal energy of a system decreases by 50 J. What is the heat exchange?
 
  A)
 
  zero
  B)
 
  25 J
  C)
 
  50 J
  D)
 
  -50 J
  E)
 
  none of the above

[Ptupou85]

Answer to Question 1

A

Answer to Question 2

D

[Ebrown]

Thanks for the timely response, appreciate it

[at]

Excellent