Which terrestrial planet(s) have magnetic fields? A) Earth and ...

[luminitza]

Which terrestrial planet(s) have magnetic fields?
 
  A) Earth and Venus
  B) Earth only
  C) all of them do
  D) Earth and Mercury

Question 2

An AC circuit has a 100. ohm resistor in series with a 4.9 F capacitor and a 700. mH inductor. At what frequency does the circuit act like a pure resistance?
 
  A) 86. Hz
  B) 0.54 kHz
  C) 1.9 mHz
  D) 0.29 MHz
  E) 12. mHz

[mcabuhat]

Answer to Question 1

D

Answer to Question 2

A

[luminitza]

Thank you!

[mcabuhat]

Always glad to help...