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3 years ago

14

Primary productivity is not limited by _______. a. the availability of sunlight b. time c. the availability of nutrients d. acce

ss to water

1 answer:

enot [183]3 years ago

3 0

Primary productivity is not limited by a. Time

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The split is given by including spaces in both tabs

Explanation:

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3 years ago

Which of the following impulse responses correspond(s) to stable LTI systems? (a) h1(t) = e-(1-2j)ru(t) (b) h2(t) = e-r cos(2t)u

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Answer:

LTI system is stable if Impulse response is finite.

so the correct answer is "b"

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4 years ago

Carbon dioxide (CO2) is used in industrial and research application, and is sometimes stored at very high pressure in rigid meta

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Answer:

a)m = 247.43 kg

b) m = 123.71 kg

Explanation:

a)

Given data:

volume =0.8 m^3

P = 18,000 kPa

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By ideal gas equation we have following relation

PV = mRT

where R is gas constant

$R = \frac{8.314}{44} = 0.18895 kJ/ kg K$

$m =\frac{PV}{RT}$

$m = \frac{18000\times 0.8}{0.18895 \times 308}$

m = 247.43 kg

b)

when pressure = 9000 kPa

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PV = mRT

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$R = \frac{8.314}{44} = 0.18895 kJ/ kg K$

$m =\frac{PV}{RT}$

$m = \frac{9000\times 0.8}{0.18895 \times 308}$

m = 123.71 kg

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