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alisha [4.7K]
3 years ago
5

Kelly sits on a rock. Her weight is an action force. What is the reaction force?

Physics
1 answer:
Dmitrij [34]3 years ago
4 0
The force ffrom the ground that holds the rock up and prevents her from falling through the gound, unless the ground breaks.
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An air compressor compresses 6 L of air at 120 kPa and 22°C to 1000 kPa and 400°C. Determine the flow work, in kJ/kg, required b
Mariana [72]

Answer:

The work flow required by the compressor = 100.67Kj/kg

Explanation:

The solution to this question is obtained from the energy balance where the initial and final specific internal energies and enthalpies are taken from A-17 table from the given temperatures using interpolation .

The work flow can be determined using the equation:

M1h1 + W = Mh2

U1 + P1alph1 + ◇U + Workflow = U2 + P2alpha2

Workflow = P2alpha2 - P1alpha1

Workflow = (h2 -U2) - (h1 - U1)

Workflow = ( 684.344 - 491.153) - ( 322.483 - 229.964)

Workflow = ( 193.191 - 92.519)Kj/kg

Workflow = 100.672Kj/kg

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An object of mass 25 kg acted upon by a net force of 10 N will experience an acceleration of?
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0.4 m/s2

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mass: 25kg

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acceleration: ?

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