We can find A.P. in many situations in our day-to-day life. One such example is a tissue paper roll, in which the first term is the diameter of the core of the roll and twice the thickness of the paper is the common difference. If the sum of first n rolls of tissue on a roll is Sn = 0.1n? +7.9n, then answer the following questions. o. in2 +7.70-718 X (i) Find S-1. (ii) What is the diameter of roll when one tissue sheet is rolled over it?​

Answer:

✨I don't know sorry to say but i don't know✨

Answer:

Himalaya Mountains at Gomukh, the terminus of the Gongotri Glacier.

Explanation:

I studied about it today itself :D

Answer:

16.2 m

Explanation:

pls check the pics

for step by step explanation

also it was a very interesting question for a class 9 student like me

pls mark me brainliest

Answer:

The correct answer is 1.55m.

Explanation:

The time taken by the ball to reach the ground is denoted by t.

the acceleration due to gravity is denoted by a.

The initial speed is denoted by u.

The kinetic energy of the ball just after the ball hit the ground is denoted by [tex]KE_{a}[/tex]  .

The speed of the ball just after the ball hit the ground is denoted by [tex]u_{a}[/tex].

The mass of the ball is denoted by m.

The height attained by the ball when the ball rebounds from the ground is denoted by h.

The final speed of the ball at a height h is denoted by  [tex]v_{a}[/tex].

The velocity of the ball hitting the ground,

[tex]v=u-at[/tex]

[tex]v=0-9.8[/tex]×3.6

v = -35.28m/sec

The kinetic energy of the ball before the ball hit the ground,

[tex]KE_{b} =\frac{1}{2}mv^{2}[/tex]

[tex]KE_{b} =\frac{1}{2}[/tex]×0.025×[tex](-35.28)^{2}[/tex]

[tex]KE_{b}[/tex] = 15.55J

As given in the question,

[tex]KE_{a}=[/tex] 75% of [tex]KE_{b}[/tex]

[tex]\frac{1}{2}mu_{a} ^{2}=\frac{75}{100}[/tex]×15.55

[tex]\frac{1}{2}[/tex]×0.025×[tex]u_{a} ^{2}=\frac{75}{100}[/tex]×15.55

[tex]u_{a}[/tex] = 30.54m/sec

The final speed [tex]v_{a}[/tex] of the ball at a height of h is equal to zero.

By the equation,

[tex]v_{a}=u_{a}-2ah[/tex]

0 = 30.54 - 2 × 9.8 × h

h = 1.55m

So, the height attained by the ball when the ball rebounds from the ground is equal to 1.55m.

None of the above is the answer because carbonation and sulphonation are the types of chemical weathering enhanced by acid rain.

What is carbonation?

• At the point when carbon dioxide is delivered into the climate via autos, it very well may be changed over completely to carbonic acid.
• These acids then, at that point, dive to earth as downpours, eliminating significant mixtures from the glasslike structures that make up rocks.
• At the same time, sulfur dioxide is changed to sulphuric acid, and nitrogen dioxide is gone into nitric acid because of non-renewable energy source consumption.
• At high temperatures, these acids go on as fume, yet when the temperature decreases, they start to consolidate.
• These acids blended with a downpour on their way to the cold earth, making it acidic.
• These acids are especially unsafe to marble, chalk, and limestone, and they make harm gravestones and rules that are made with these sorts of materials.
• The contextual analysis of the yellowing of the Taj Mahal gives the ideal illustration of this.

#SPJ2

Answer:

None of the above is the answer for What type of chemical weathering is enhanced by acid rain

Explanation:

The correction option is D. that is None of the above.

At the point when carbon dioxide is delivered into the climate via autos, it very well may be changed over completely to carbonic acid.

These acids then, at that point, dive to earth as downpours, eliminating significant mixtures from the glasslike structures that make up rocks.

• At the same time, sulfur dioxide is changed to sulphuric acid, and nitrogen dioxide is gone into nitric acid because of non-renewable energy source consumption.
• At high temperatures, these acids go on as fume, yet when the temperature decreases, they start to consolidate.
• These acids blended with a downpour on their way to the cold earth, making it acidic.
• These acids are especially unsafe to marble, chalk, and limestone, and they make harm gravestones and rules that are made with these sorts of materials.

The contextual analysis of the yellowing of the Taj Mahal gives the ideal illustration of this.

#SPJ2