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VladimirAG [237]
1 year ago
13

Highlight the reasons why tightness is required when a vaccum needs created​

Physics
1 answer:
erica [24]1 year ago
4 0

When a vacuum is created, it is created for the purpose to remove anything.

The main purpose of creating vacuum is referred to removal of the air from a particular space or chamber.

Such a kind of procedure should guarantee tightness.

If there is a slight leakage then the air molecules can slip in through that space created.

This will allow air to remain in the place and there won't be any possibility of creating vacuum as there won't be full removal of air.

Therefore, it becomes important to ensure the tightness of vacuum while creating it so that there is no passage created for air to pass through.

To know more about vacuum, refer: brainly.com/question/29242274

#SPJ9

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Suppose you are asked to find 91,321,972×0.007004. Doing a quick estimate by rounding the numbers in scientific notation, what v
slamgirl [31]

Answer:

Product, P=9.1321972\times 10^7\times 7.004\times 10^{-3}

P = 639619.091888

Explanation:

In this case, we need to find the product of two numbers. These are as follows :

N_1=91321972=9.13\times 10^7

N_2=0.007004=7.004\times 10^{-3}

On doing calculation, we get the product of two numbers as :

P=N_1\times N_2

P=9.1321972\times 10^7\times 7.004\times 10^{-3}

P = 639619.091888

In scientific notation the product of two number is given by :

P=63\times 10^4

Hence, this is the required solution.

3 0
3 years ago
Why is the sky blue in colour?​
Svetllana [295]

\huge\mathrm{Answer࿐}

Our Atmosphere is full of freely subtended particles, and when light from sun strikes the particles then scattering occurs, in which blue colour is most scattered and hence causing Sky to appear blue .

Hope it helps !!

_____________________________

\mathrm{ \#TeeNForeveR}

3 0
3 years ago
Read 2 more answers
Please help fast!! I need this in less than 17 hours!
djyliett [7]

SOLUTION is given in attachment below.

7 0
3 years ago
24 POINTS!!!!!!!!!!!!!!!
TEA [102]
Potential Energy (Initial one) = m * g * h
P.E. = 60 * 9.8 * 10
P.E. = 5880

Kinetic Energy (Final One) = 1/2 mv²
K.E. = 1/2 * 60 * (10)²
K.E. = 6000/2
K.E. = 3000

Lost Energy = 5880 - 3000 = 2880 J

In short, Your Answer would be 2880 Joules

Hope this helps!
7 0
3 years ago
Read 2 more answers
The mass of the earth is 5.98 1024 kg, the mass of the moon is 7.36 1022 kg, and the distance between the centers of the earth a
Setler [38]

Answer:

 x_{cm} = 4.644 10⁶ m

Explanation:

The center of mass is given by the equation

         x_{cm} = 1 / M_{total}  ∑ x_{i}  m_{i}

Where M_{total} is the total masses of the system, x_{i} is the distance between the particles and m_{i} is the masses of each body

Let's apply this equation to our problem

        M = Me + m

        M = 5.98 10²⁴ + 7.36 10²²

        M = 605.36 10²² kg

Let's locate a reference system located in the center of the Earth

Let's calculate

       x_{cm} = 1 / 605.36 10²²   [Me 0 + 7.36 10²² 3.82 10⁸]

       x_{cm} = 4.644 10⁶ m

4 0
3 years ago
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