A3250-kg aircraft takes 12.5 min to achieve its cruising
altitudeof 10.0 km and cruising speed of 850 km/h. if the
plane'sengines deliver on average, 1500 hp of power during this
time, whatis the efficiency of the engines?

effeciency n = = 49%

Explanation:

given data:

mass of aircraft 3250 kg

power P = 1500 hp = 1118549.81 watt

time = 12.5 min

h = 10 km = 10,000 m

v =85 km/h = 236.11 m/s

kinetic energy

kinetic energy

gravitational energy

total energy

effeciency n = = 49%

c the car's velocity increases constantly over time.

b) returns freshwater to the earth.

c) returns freshwater to the earth.c) occurs after condensation.

d) returns freshwater to the earth.c) occurs after condensation.d) roughly equal to the amount of evaporation.

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