Answer:
Sound waves are reflected back
Answer:
Acceleration acts always in the direction. Of the displacement. Of the initial velocity.
Correct me if I’m wrong, but I believe it’s A and D, though I’m not fully sure.
The correct diagram is shown below:
The charges of +2 µC and +3 µC are 4 mm from each other. The diagram below represents the electrical force between the charges. i.e. repulsive force. However the force of repulsion exerted by charge +3 µC on +2<span> µC will be more. The same charges repel each other and opposite charges attract each other.</span>