3 years ago

What are significant figures

Engineering

1 answer:

lesantik [10]3 years ago

4 0

Answer:

rounding

Explanation:

each of the digits of a number that are used to express it to the required degree of accuracy, starting from the first non-zero digit.

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notka56 [123]

Ummm did you try to add or subtract and multiply or divide that can get your answer

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2 years ago

A fluid of density 900 kg/m3 passes through a converging section of an upstream diameter of 50 mm and a downstream diameter of 2

NISA [10]

Answer:

Q= 4.6 × 10⁻³ m³/s

actual velocity will be equal to 8.39 m/s

Explanation:

density of fluid = 900 kg/m³

d₁ = 0.025 m

d₂ = 0.05 m

Δ P = -40 k N/m²

C v = 0.89

using energy equation

$\dfrac{P_1}{\gamma}+\dfrac{v_1^2}{2g} = \dfrac{P_2}{\gamma}+\dfrac{v_2^2}{2g}\\\dfrac{P_1-P_2}{\gamma}=\dfrac{v_2^2-v_1^2}{2g}\\\dfrac{-40\times 10^3\times 2}{900}=v_2^2-v_1^2$

under ideal condition v₁² = 0

v₂² = 88.88

v₂ = 9.43 m/s

hence discharge at downstream will be

Q = Av

Q = $\dfrac{\pi}{4}d_1^2 \times v$

Q = $\dfrac{\pi}{4}0.025^2 \times 9.43$

Q= 4.6 × 10⁻³ m³/s

we know that

$C_v =\dfrac{actual\ velocity}{theoretical\ velocity }\\0.89 =\dfrac{actual\ velocity}{9.43}\\actual\ velocity = 8.39m/s$

hence , actual velocity will be equal to 8.39 m/s

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2 years ago

Por favor. alguien me comunique con fatimalisethmateual

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Wait why do you want me to

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2 years ago

Fill in the blank to correctly complete the statement below.

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Did not engineer cables factoring wind shear

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3 years ago

Please help me do this with my exam tomorrow.

blagie [28]

Answer:

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Explanation:

cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

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2 years ago

What are significant figures​

What are significant figures