A series LRC circuit has a 100- resistor, a 0.100-F capacitor and ...

[londonang]

A series LRC circuit has a 100- resistor, a 0.100-F capacitor and a 2.00-mH inductor connected across a 120-V rms ac voltage source operating at (1000/) Hz. What is the resonant frequency of this circuit?
 
  A)
 
  70.7 kHz
  B)
 
  17.9 kHz
  C)
 
  22.5 kHz
  D)
 
  35.3 kHz
  E)
 
  11.3 kHz

Question 2

You have discovered a new asteroid, which has a moon in an elliptical orbit around it. From a series of observations, you establish that the closest approach occurs when the moon is 49,000 m from the asteroid,
 
  the furthest separation is 98,000 m, and the speed of the moon at the point of closest approach is 7.50 m/s. What is the mass of the asteroid? G = 6.67 x 10-11 Nm2/kg2.
  A)
 
  4.25  1016 kg
  B)
 
  9.87  1016 kg
  C)
 
  3.10  1016 kg
  D)
 
  2.04  1016 kg
  E)
 
  5.05  1016 kg

[allisonblackmore]

Answer to Question 1

E

Answer to Question 2

C