An ideal pulley changes the direction of the tension in a string ...

[futuristic]

An ideal pulley changes the direction of the tension in a string without changing its magnitude.
 
  Indicate whether the statement is true or false

Question 2

The energy per unit volume in an EM wave is
 
  A)
 
  equally divided between the electric and magnetic fields.
  B)
 
  almost entirely in the electric field.
  C)
 
  indeterminate.
  D)
 
  almost entirely in the magnetic field.
  E)
 
  zero.

[duke02]

Answer to Question 1

TRUE

Answer to Question 2

A

[futuristic]

Excellent

[ecabral0]

Thanks for the timely response, appreciate it