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3 years ago

Which statement about ocean surface currents is false?

Physics

1 answer:

Alla [95]3 years ago

4 0

A) they have no effect on air temperature over land on the coast is False

Explanation:

warm and cold ocean currents can influence the coastal areas only when the air is blown into the land from the sea.
the temperature over the land increases when warm ocean currents heat the air above the ocean.
the temperature over the land decreases when cold ocean currents cool the air above the ocean and can bring colder winds to the coastal regions.
so, ocean currents play a major role in regulating the air temperature over land on the coastal region.

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A 3250-kg aircraft takes 12.5 min to achieve its cruising

scoundrel [369]

Answer:

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

$n = \frac{P_0}{P}$

$P_o = \frac{total\ energy}{t} = \frac{ kinetic \energy + gravitational\ energy}{t}$

kinetic energy $= \frac{1}{2} mv^2 =\frac{1}{2} 3250* 236 = 90590389.66 kg m^2/s^2$

kinetic energy $= 90590389.66 kg m^2/s^2$

gravitational energy $= mgh = 3250*9.8*10000 = 315500000.00 kg m^2/s^2$

total energy $= 90590389.66 +315500000.00 = 409091242.28 kg m^2/s^2$

$P_o =\frac{409091242.28}{750} = 545454.99 j/s$

$effeciency\ n = \frac{P_o}{P} = \frac{545454.99}{1118549.81} = 0.49$

effeciency n = = 49%

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2 years ago

If your average speed is 3 m/s, how far have you traveled in 1 second, 2 second, 3 seconds?

vichka [17]

Answer:

in 1 second 3m, in 2 seconds 6m, in 3 seconds 9m.

Explanation:

distance=speed × time

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3 years ago

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2 years ago