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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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The purification of hydrogen gas is possible by diffusion through a thin palladium sheet. Calculate the number of kilograms of h

diamong [38]

Answer:

$M=0.0411 kg/h or 4.1*10^{-2} kg/h$

Explanation:

We have to combine the following formula to find the mass yield:

$M=JAt$

$M=-DAt(ΔC/Δx)$

The diffusion coefficient : $D=6.0*10^{-8} m/s^{2}$

The area : $A=0.25 m^{2}$

Time : $t=3600 s/h$

ΔC: $(0.64-3.0)kg/m^{3}$

Δx: $3.1*10^{-3}m$

Now substitute the values

$M=-DAt(ΔC/Δx)$

$M=-(6.0*10^{-8} m/s^{2})(0.25 m^{2})(3600 s/h)[(0.64-3.0kg/m^{3})(3.1*10^{-3}m)]$

$M=0.0411 kg/h or 4.1*10^{-2} kg/h$

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3 years ago

What is the uppermost part of the tree referred to as?

tangare [24]

Answer:

canopy I believe it is called

7 0

3 years ago

Read 2 more answers

A transmission line (TL) of length L and conductance per unit length G' is connected to an ideal constant voltage generator V. T

Andru [333]

Answer:

The Current will decrease by a factor of 2

Explanation:

Given the conditions, it should be noted that the current in the circuit is determined by the LOAD. In other words, the amount of current generator will be producing depends upon the load connected to it.

Now, as the question says, the load is reduced to half its original value, we can write:

$P1 = \sqrt{3} (V) (I1) Cos\alpha ----- (1)$

$P2 = \sqrt{3} (V) (I2) Cos\alpha\\$

Since, P2 = P1/2,

$P1/2 = \sqrt{3} (V) (I2) Cos\alpha ----- (2)\\$

Dividing equations (1) and (2), we get,

P1 / (P1/2) = I1/ I2

$I2 = I1 / 2\\$

Hence, it is proved that the current in the transmission line will decrease by a factor of 2 when load is reduced to half.

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3 years ago

ME<br> And what you know about love

antoniya [11.8K]

Answer:

Everything I got what you need

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3 years ago

Given A = {1,2,42,57,99,538,677}, B = {1,5,6,7,{2,3} , and C ={1,{7}, {8,9}}, answer the following questions, use the proper not

professor190 [17]

Answer:

c < 7

Explanation:

The cardinal indicates the number or quantity of the elements of a set, be this finite or infinite quantity.

Given, A = {1, 2, 42, 57, 99, 538, 677}

B = {1, 5, 6, 7, {2, 3} }

C = {1, {7}, {8, 9} }

Let's say the cardinality of the subset is: c

Inequality that represents the cardinality of any proper subset of A is: c < 7

Hope this helps!

8 0

3 years ago

What are significant figures​

What are significant figures