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Vika [28.1K]
2 years ago
15

When you set a heavy bag down on the ground, you are doing _______ work on it.

Physics
1 answer:
puteri [66]2 years ago
4 0

When you set a heavy bag down on the ground, you are doing negative work on it.

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With what force will a car hit a tree if the car has a mass of 3,000 kg and it is accelerating at a rate of 2m/s2
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3 years ago
Which was the first object made by humans to orbit earth?
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3 years ago
A 0.050 kg toy truck moving right at 0.20 m/s collided with a toy car weighing 0.015 kg initially at rest, on a frictionless tra
Kamila [148]

Answer:

0.1667 m/s

Explanation:

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7 0
2 years ago
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Refrigerant-134a enters a compressor at 180 kPa as a saturated vapor with a flow rate of 0.35 m3/min and leaves at 900 kPa. The
Alexus [3.1K]

Answer:

52.5°C

Explanation:

The final enthalpy is determined from energy balance where initial enthalpy and specific volume are obtained from A-12 for the given pressure and state

mh1 + W = mh2

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h1 + Wα1/V1

242.9 kJ/kg + 2.35.0.11049kJ/ 0.35/60kg

=287.4 kJ/kg

From the final enthalpy and pressure the final temperature is obtained A-13 using interpolation

i.e T2 = T1 + T2 -T1/h2 -h1(h2 - h1)

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(287.4 - 284.79)°C

= 52.5°C

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3 years ago
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