20Ah is the number of charge that can be supplied at 20A for 1 hour. If you wish to drain it in 19 minutes, then the current is:
I took the test, its constructive interference
Edit: this is kind of a trick question. took the test again it was the same question yet this time the answer was destructive. Good luck with that
<span>A Doppler radar system transmits radio waves off of objects
and receives what bounces back.
The system measures the difference between the frequency
of the waves it sends and the frequency of the waves it receives.
If the waves come back at a higher frequency than they were sent,
that means the object is moving toward the radar antenna.
If the waves come back at a lower frequency than they were sent,
that means the object is moving away from the radar antenna.
This is kind of what choice-A is trying to say.
</span>
Answer:
A
Explanation:
THAT is th equation for Potential Energy
