The transparent film laminated to a fabric is identified in the study material as PVC. PVC or polyvinyl chloride is a type of synthetic resin. For fabric, PVC on fabric is typically plastic-coated polyester, and is more resistant to wear and tear than others.
Action: you muscles exert force that acts on the bunching bag. The bag on the other hand exerts force of reaction directed in a same line with the force exerted by your fist.
The basketball acts on the rack with force of its weight (in this case we can say it equals basketball's force of gravity), and the rack acts on the ball with the normal force.
The correct choice is D, and it's convection, not conversion.
Answer:
a) 30.84m/s
b) 348.32Hz
c) 32.34m/s
d) 289.69Hz
Explanation:
a) If 1 mile=1609,34m, and 1 hour=3600 seconds, then 69mph=69*1609.34m/3600s=30.84m/s
b) Based on Doppler effect:
/*I will take as positive direction the vector */
c)
d)