A transmission system at a radio station uses an oscillator to convert a direct current into a high frequency alternating current.
Answer: constructive interference
Explanation: plz mark Brainly
Explanation:
The net force along the horizontal direction is
where f is the frictional force. We can find the frictional force by looking at the vertical forces acting on the couch:
From the definition of frictional force,
Therefore, the net force on the couch is
The solutions would be :
1. C
2. B
3. A
4. C
5. D.
C.reproducing is think and if wrong I'm so very sorry