A 2-m-tall person viewing his full-length image in a plane mirror ...

[lracut11]

A 2-m-tall person viewing his full-length image in a plane mirror requires a mirror that is at least
 
  1) any visible size.
  2) 2 m tall.
  3) 1 m tall.
 
  The size of mirror required
  4) depends on how far away from it he stands.
  5) does not depend on how far away from it he stands.

Question 2

A device that transforms electrical energy to mechanical energy is
 
  1) a generator,
  2) a motor,
  3) a transformer,
  4) any common magnet,
 
  and a device that transforms mechanical energy into electrical energy is a
  5) generator.
  6) motor.
  7) transformer.

[fauacakatahaias]

Answer to Question 1

Answer: 3, 5

Answer to Question 2

Answer: 1, 5

[lracut11]

Gracias!

[kusterl]

Excellent