A steel lift column in a service station is 4.0 m long and 0.20 m ...

[fbq8i]

A steel lift column in a service station is 4.0 m long and 0.20 m in diameter. Young's modulus for steel is 20  1010 N/m2. By how much does the column shrink when a 5000-kg truck is on it?
 
  A)
 
  4.7  10-7 m
 
  B)
 
  8.0  10-7 m
 
  C)
 
  3.2  10-6 m
 
  D)
 
  7.8  10-6 m
 
  E)
 
  3.1  10-5 m

Question 2

Metallic bonding is caused by
 
  A)
 
  the sharing of electrons by all atoms.
  B)
 
  the transfer of electrons between atoms.
  C)
 
  unequal charge distributions around neutral molecules.
  D)
 
  atoms bonding to hydrogen molecules.
  E)
 
  atoms bonding to oxygen molecules.

[medine]

Answer to Question 1

E

Answer to Question 2

A