A spring with a spring constant of 2500 N/m. is stretched 4.00 ...

[codyclark]

A spring with a spring constant of 2500 N/m. is stretched 4.00 cm. What is the work required to stretch the spring?
 
  A)
 
  4.00 J
 
  B)
 
  0 J
 
  C)
 
  1.00 J
 
  D)
 
  3.00 J
 
  E)
 
  2.00 J

Question 2

What power contact lens should be used to correct the vision of a farsighted person whose near point is 80 cm to see something clearly at a distance of 25 cm?
 
  A)
 
  2.8 diopters
  B)
 
  -2.8 diopters
  C)
 
  -4.0 diopters
  D)
 
  -4.2 diopters
  E)
 
  4.2 diopters

[kmb352]

Answer to Question 1

E

Answer to Question 2

A

[codyclark]

Great answer, keep it coming

[yeungji]

Thanks for the timely response, appreciate it