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lutik1710 [3]
3 years ago
13

What is the density of concrete in kilogram per cubic meter.

Physics
2 answers:
Korvikt [17]3 years ago
6 0

Answer:

2400 kg per cubic meter

Explanation:

gulaghasi [49]3 years ago
5 0

Answer:

2400 kilogram per cubic meter

Explanation:

the density of concrete is a measure of its unit weight.

concrete is a mixture of cement, fine and coarse aggregates, water and sometimes some supplementary materials like fly ash, and various admixtures.

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Answer:

a) W=85.225 kW

b) 0.02\frac{kW}{K}

Explanation:

First, consider the energy balance for the compressor: The energy that enters to the system (W and enthalpy of the feed flow) is equal to the energy that goes out from it (Heat Q and enthalpy of the exit flow):

W+m*h_1=Q+m*h_2\\W=Q+m*(h_2-h_1)

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W=6kW+15\frac{kg}{min}*\frac{min}{60s}*(1757.5-1440.6)\frac{kJ}{kg}\\W=85.225kW

b) The differential entropy change dS for a reversible heat transfer dQ at a temperature T is:

dS=\frac{dQ}{T}

This equation can be integrated if the heat transfer surface temperature remains constant, which is the case, giving as a result:

S_2-S_1=\frac{Q}{T}=\frac{6kW}{300K}=0.02\frac{kW}{K}

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3 years ago
A sperm whale can accelerate at about 0.0800 m/s 2 0.0800 m/s 2 when swimming on the surface of the ocean. How far will a sperm
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Answer:

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