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Sedaia [141]
2 years ago
15

Technician a says heat transfer is always hot to cold. technician b says high pressure always flows to low pressure. who is corr

ect?
Physics
1 answer:
r-ruslan [8.4K]2 years ago
5 0

Both the technician are correct.

All the driving force in the universe always flow from the higher body to lower body, until unless acted by external forces. Which means heat always flow from a hotter body to colder body, high pressure always flow to low pressure.

Therefore the both the technician are correct.

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A garden hose having with an internal diameter of 1.1 cm is connected to a (stationary) lawn sprinkler that consists merely of a
trapecia [35]

Answer:

Water leaves the sprinkler at a speed of 2.322 m/sec

Explanation:

We have given internal diameter of the garden d_1=1.1cm

Speed of water in the hose is v_1=0.95m/sec

Number of holes n = 22

Diameter of each holes d_2=15cm

According to continuity equation A_1v_1=A_2v_2

d_1^2\times v_1=22\times d_2^2v_2

1.1^2\times 0.95=22\times 0.15^2\times v_2

v_2=2.322m/sec

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3 years ago
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Answer:

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v_i and v_f are the initial and final velocities.

With <em>m</em> = 0.175 kg,

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The negative sign appears because energy is lost.

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