Earth's magnetism arises from A) charged particles at rest on ...

[kellyjaisingh]

Earth's magnetism arises from
 
  A) charged particles at rest on Earth's surface and on clouds in the lower atmosphere.
  B) the Wizard of Oz.
  C) electric currents in Earth's interior.
  D) electric currents in the sun.
  E) electric currents in the upper atmosphere.

Question 2

A doubly charged ion (charge 2e) with velocity 6.9  106 m/s moves in a circular path of diameter 60.0 cm in a magnetic field of 0.80 T in a mass spectrometer. What is the mass of this ion? (e = 1.60  10-19 C)
 
  A) 11  10-27 kg
  B) 6.7  10-27 kg
  C) 4.5  10-27 kg
  D) 3.3  10-27 kg
  E) 8.2  10-27 kg

[juiceman1987]

Answer to Question 1

C

Answer to Question 2

A

[kellyjaisingh]

Gracias!

[EAN94]

Excellent