Estimate how many times you would have to fold a sheet of paper ...

[APUS57]

Estimate how many times you would have to fold a sheet of paper until it becomes as thick as a large dictionary (approximately 10 cm thick).
 
  A) 10 times
  B) 50 times
  C) 100 times
  D) 500 times
  E) 1000 times

Question 2

Two identical vertical springs S1 and S2 have masses m1 = 400 g and m2 = 800 g attached to them. If m1 causes spring S1 to stretch by 4 cm, what is the ratio of the potential energy of S1 and S2? Use g = 10 m/s2.
 
  A) 2:1
  B) 1:2
  C) 1:3
  D) 4:1
  E) 1:4

[meow1234]

Answer to Question 1

A

Answer to Question 2

E