Light travels fastest A) in a vacuum. B) through water. C) ...

[stock]

Light travels fastest
 
  A) in a vacuum.
  B) through water.
  C) through glass.
  D) through plastic.
  E) through diamond.

Question 2

Two point charges of + 30.0 C and - 9.00 C are separated by a distance of 20.0 cm. A +7.00 C charge is placed midway between these two charges. What is the electric force acting on this charge because of the other two charges?
 
  A) 0.453 N directed towards the negative charge
  B) 2.45 N directed towards the negative charge
  C) 2.45 N directed towards the positive charge
  D) 245 N directed towards the positive charge
  E) 245 N directed towards the negative charge

[ladyjames123]

Answer to Question 1

A

Answer to Question 2

E

[stock]

Excellent

[ricroger]

Gracias!