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slavikrds [6]
3 years ago
15

100 POINTSSSS PLEASE HELP

Physics
2 answers:
Ahat [919]3 years ago
8 0

renewable resources primarily used to produce electricity wuld be those power plants that are big like a dam for hydroelectric, wind turbine for electric generation, geothermal power plant, and solar farm for electricity.


lara31 [8.8K]3 years ago
4 0
Wood, wind, sunshine,geothermal energy, biomass and water 
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Please help!!!!!!!!!
denpristay [2]

What help do you want? If you tell, I may help you.

7 0
3 years ago
Two moles of helium are initially at a temperature of 21.0 ∘Cand occupy a volume of 3.30×10−2 m3 . The helium first expands at c
Anettt [7]

Answer:

(B) The total internal energy of the helium is 4888.6 Joules

(C) The total work done by the helium is 2959.25 Joules

(D) The final volume of the helium is 0.066 cubic meter

Explanation:

(B) ∆U = P(V2 - V1)

From ideal gas equation, PV = nRT

T1 = 21°C = 294K, V1 = 0.033m^3, n = 2moles, V2 = 2× 0.033=0.066m^3

P = nRT ÷ V = (2×8.314×294) ÷ 0.033 = 148140.4 Pascal

∆U = 148140.4(0.066 - 0.033) = 4888.6 Joules

(C) P2 = P1(V1÷V2)^1.4 =148140.4(0.033÷0.066)^1.4= 148140.4×0.379=56134.7 Pascal

Assuming a closed system

(C) Wc = (P1V1 - P2V2) ÷ 0.4 = (148140.4×0.033 - 56134.7×0.066) ÷ 0.4 = (4888.6 - 3704.9) ÷ 0.4 = 1183.7 ÷ 0.4 = 2959.25 Joules

(C) Final volume = 2×initial volume = 2×0.033= 0.066 cubic meter

6 0
3 years ago
Which is occurring when work is being done?
sineoko [7]

Answer:

When work is being done, the practie of labor is being performed. When work isn't being completed, this is a sign of procrastination.

Explanation:

In the answer.

5 0
3 years ago
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true

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7 0
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China's GDP passed one trillion USD between Between 2005 and 2010, China's GDP increased by approximately
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Answer:

1995 and 2000 , 4 trillions

Explanation:

3 0
2 years ago
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