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kirill [66]
2 years ago
8

True or false for the 4 questions?

Engineering
1 answer:
MariettaO [177]2 years ago
3 0

Answer:

true, false, true, true

Explanation:

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A closed system of mass 10 kg undergoes a process during which there is energy transfer by work from the system of 0.147 kJ per
mr_godi [17]

Answer:

-50.005 KJ

Explanation:

Mass flow rate = 0.147 KJ per kg

mass= 10 kg

Δh= 50 m

Δv= 15 m/s

W= 10×0.147= 1.47 KJ

Δu= -5 kJ/kg

ΔKE + ΔPE+ ΔU= Q-W

0.5×m×(30^2- 15^2)+ mgΔh+mΔu= Q-W

Q= W+ 0.5×m×(30^2- 15^2) +mgΔh+mΔu

= 1.47 +0.5×1/100×(30^2- 15^2)-9.7×50/1000-50

= 1.47 +3.375-4.8450-50

Q=-50.005 KJ

7 0
3 years ago
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U 4. Find 2 bridges in the US and answer the following:
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Answer:

Im guessing this is for CEA for PLTW, if so look up the exact assignment number and look at online examples of the exact same assignment.

Explanation:

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3 years ago
8. When supplying heated air for a building, one often chooses to mix in some fresh outside air with air that has been heated fr
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Answer:

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The brakes are being bled on a passenger vehicle with a disc/drum brake system. Technician A says that the drums should be remov
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The brakes are being bled on a passenger vehicle with a disc/drum brake system is described in the following

Explanation:

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4,Brake drag is caused by the brake pads or shoes not releasing completely when the brake pedal is released. ... A worn or corroded master cylinder bore causes excess pedal effort resulting in dragging brakes. Brake Lines and Hoses: There may be pressure trapped in the brake line or hose after the pedal has been released.

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A BOD test is run using 30 mL of wastewater and 270 mL of dilution water. The initial DO of the mixture is 9.0 mg/L. After 5 day
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