M° = 2.5 kg/sec
For saturated steam tables
at p₁ = 125Kpa
hg = h₁ = 2685.2 KJ/kg
SQ = s₁ = 7.2847 KJ/kg-k
for isotopic compression
S₁ = S₂ = 7.2847 KJ/kg-k
at 700Kpa steam with S = 7.2847
h₂ 3051.3 KJ/kg
Compressor efficiency
h = 0.78
0.78 = h₂ - h₁/h₂-h₁
0.78 = h₂-h₁ → 0.78 = 3051.3 - 2685.2/h₂ - 2685.2
h₂ = 3154.6KJ/kg
at 700Kpa with 3154.6 KJ/kg
enthalpy gives
entropy S₂ = 7.4586 KJ/kg-k
Work = m(h₂ - h₁) = 2.5(3154.6 - 2685.2
W = 1173.5KW
Who conducted the study?
Explanation:
One good question to ask the toothpaste making company is who conducted the study?
A company making toothpaste claiming a scientific study revealed that their toothpaste makes the mouth five times cleaner must have introduced a bias in this finding.
- For a scientific study to be accepted and substantiated, it must have been tested and repeated by other scientists.
- If no other scientist confirms this, then there is an obvious bias in the claim and it is not scientific.
Learn more:
Objective reporting brainly.com/question/2242789
#learnwithBrainly
Answer:
V = 48 Volts
Explanation:
Since we know that electric potential is a scalar quantity
So here total potential of a point is sum of potential due to each charge
It is given as
here we have potential due to 50 nC placed at y = 6 m
Now potential due to -80 nC charge placed at x = -4
Now potential due to 70 nC placed at y = -6 m
Now total potential at this point is given as
First calculate the time by using following equation:<span>
d= (vi+vf)/2 x t </span>
where t = time
vi is the initial velocity = 23 m/s
<span>vf is the final velocity = 0 m/s</span>
and d is the distance covered = 85m
85 = (23 + 0)/2 x t
t = 85/11.5 = 7.39s
Now use this equation to find acceleration:
a= (vf-vi)/t <span>
a = 0 – 23/ 7.39</span>
a = -3.112 m/s²
<span>so, the acceleration is 3.112 m/s</span>²<span>
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