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3 years ago

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What is SI system and SI unit?

1 answer:

Novay_Z [31]3 years ago

7 0

Answer:

nternational System of Units (SI), French Système International d'Unités, international decimal system of weights and measures derived from and extending the metric system of units. Adopted by the 11th General Conference on Weights and Measures (CGPM) in 1960, it is abbreviated SI in all languages.

Explanation:

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Wet sugar that contains one-fifth water by mass is conveyed through an evaporator in which 85% of the of the entering water is e

Natalka [10]

Answer:

a)

i) $v'=\frac{17}{20}$ ii) $\frac{m_v}{m_f-m_v} =\frac{17}{83}$

b) $m_r=752963.55\ kg$

Explanation:

Given:

fraction of water in wet sugar of m kg by mass, $m'_w=\frac{1}{5} \times m$

% of water evapourated from the total water after passing through the evapourator, $m'_v=85\%$

a)

amount of wet sugar fed to the evapourator, $m_f=100\ kg$

Now the mass of water present in the fed amount of sugar:

$m_w=\frac{1}{5} \times m_f$

$m_w=\frac{100}{5}$

$m_w=20\ kg$

Now the amount of water leaving from this total amount of water after passing through the evapourator:

$m_v=m_v' \times m_w$

$m_v=\frac{85}{100} \times 20$

$m_v=17\ kg$

i)

So, the fraction of of water leaving the evapourator:

$v'=\frac{m_v}{m_w}$

$v'=\frac{17}{20}$

ii)

Now the ratio of kg water vaporized/kg wet sugar leaving the evaporator.:

$\frac{m_v}{m_f-m_v} =\frac{17}{100-17}$

$\frac{m_v}{m_f-m_v} =\frac{17}{83}$

b)

amount of sugar fed per day, $m_f=907185\ kg$

<u>Now the mass of water in the given amount of sugar per day:</u>

$m_w=\frac{m_f}{5}$

$m_w=\frac{907185}{5}$

$m_w=181437\ kg$

Mass of water vapourized after passing through the evaporator:

$m_v=\frac{85}{100}\times m_w$

$m_v=\frac{85}{100}\times 181437$

$m_v=154221.45\ kg$

Now the mass of water still remaining in the sugar:

$m_r=m_w-m_v$

$m_r=907185-154221.45$

$m_r=752963.55\ kg$

is the mass of extra water to be evapourated.

8 0

3 years ago

Gravity anything with mass as gravity we know the earth has gravity because you and I are standing on earth and not floating off

Paraphin [41]

Answer:

$F=mg$

Explanation:

Close to Earth's surface, the force of gravity that pulls an object towards the ground is

$F=mg$ (2)

where

m is the mass of the object

g is the acceleration due to gravity, which is $9.81 m/s^2$ close to Earth's surface

This is an approximation of the general formula of gravity valid only close to Earth's surface. The more general formula is

$F=G\frac{Mm}{r^2}$ (1)

where

G is the gravitational constant

M is the Earth's mass

m is the object's mass

r is the distance of the object from Earth's center

At the Earth's surface,

r = R (Earth's radius), and by calling the following factor

$g=\frac{GM}{R^2}$

we see that eq.(1) becomes eq.(2).

8 0

3 years ago

The __________ eventually becomes the muscles, skeleton, circulatory system, and other internal organs.

never [62]

Answer:

Mesoderm.....

Explanation:

Endoderm becomes internal organ

4 0

3 years ago

Will give BRAINEST to the person who answers right

Nookie1986 [14]

The answer of this question is B. 22x + 20

3 0

3 years ago

Read 2 more answers

A charge Q is uniformly spread over one surface of a very large nonconducting square elastic sheet having sides of length d. At

Umnica [9.8K]

Answer:

Explanation:

Given

Charge Q is uniformly spread over large non-conducting Elastic sheet

Electric field due to non-conducting Elastic sheet

$E=\frac{\sigma }{2\epsilon }$

where $\sigma =$ surface charge density $=\frac{q}{d^2}$

$E=\frac{\frac{q}{d^2}}{2\epsilon }$

for side 2d Electric Field is given by

$E'=\frac{\frac{q}{2d^2}}{2\epsilon }$

$E'=\frac{1}{4}\times \frac{\frac{q}{d^2}}{2\epsilon }$

$E'=\frac{E}{4}$

8 0

3 years ago