1.A graduated cylinder with a least count of = 0.5 ml is used in a density
1 answer:
We have that
From the question we are told
- A graduated cylinder with a least count of
- The initial water level, before inserting the irregular
- shaped solid.
- Is 30.0 ml. After inserting the solid,
- The water level is 34.5 ml.
Generally the equation for the new quantity. is mathematically given as
X=Initial level - Final Level (initial and final error)
Therefore
Therefore
The Probable error is
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Answer:
Cost= 0.5 $
Explanation:
Coefficient of performance of the air conditioning system is given as
Energy = energy discharged or vented every hour= m c ΔT
Q = heat energy (Joules, J)
m = mass of a substance (kg)
c = specific heat (units J/kg∙K)
∆ is a symbol meaning "the change in"
∆T = change in temperature (Kelvins, K)
therefore
where m = ρV = density of air x volume = 1.20 x 200 x 2.4 = 576Kg
Energy = energy discharged or vented every hour= ρVc ΔT
Q= 576 x 1.005 x 10 = 5760 KJ/hour
therefore=ore 1kw = 3600KJ/hour
Q = 1.6 Kwh
Q =
Cost = per unit cost x energy vent x no of hours
Cost = 0.1 x 0.5 x 10
Cost= 0.5 $