A sound wave is a wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air.
Choices 'B'; and 'D' both begin with the correct words.
But they should end with the equation
R = V / I
Answer:
the pressure due to the water on the diver is 200,000 pascal
pressure = height × density × acceleration due to gravity
p = 20×1000×10
p=200,000 pascal
Molten Mattet Seeps through the crust and forms new land.
