A wire of diameter 0.20 mm stretches by 0.20 when a 6.28-N force ...

[asmith134]

A wire of diameter 0.20 mm stretches by 0.20 when a 6.28-N force is applied to it. What is Young's modulus for this wire?
 
  A) 2.5  1010 Pa
  B) 1.0  1011 Pa
  C) 2.5  1012 Pa
  D) 1.0 1012 Pa

Question 2

An ionized atom having Z protons has had all but one of its electrons removed. If E is the total energy of the ground state electron in atomic hydrogen, then what is the total energy of the remaining electron in the ionized atom?
 
  A) ZE B) E/Z C) E D) Z2E E) E/Z2

[ergserg]

Answer to Question 1

B

Answer to Question 2

D