You are frosting some holiday cookies using a tube of frosting with a long narrow tip attached. You must squeeze the tube very hard to get the frosting to come out of the narrow opening because,
A. viscous drag between the walls of the tip and the frosting waste considerable energy as heat.
B. viscous drag between the walls of the tip and the frosting causes the frosting to swirl around chaotically.
C. Newton's third law requires most of the energy in the frosting to be used to push back on you rather than moving it through the tip.
D. the high density of the frosting impedes its flow through the small opening.
Answer:A
You are frosting some holiday cookies using a tube of frosting with a long narrow tip attached. You must squeeze the tube very hard to get the frosting to come out of the narrow opening because,
A. viscous drag between the walls of the tip and the frosting waste considerable energy as heat. B. viscous drag between the walls of the tip and the frosting causes the frosting to swirl around chaotically. C. Newton's third law requires most of the energy in the frosting to be used to push back on you rather than moving it through the tip. D. the high density of the frosting impedes its flow through the small opening.