An MRI machine needs to detect signals that oscillate at very high frequencies. It does so with an LC circuit containing a 15mH coil. To what value should the capacitance be set to detect a 450 MHz signal?

The capacitance is  

Explanation:

From the question we are told that

   The  induction of the LC circuit is  

    The  frequency is  

The natural frequency is mathematically represented as

Where C is the capacitance So  

=>      

substituting values

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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