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# Tutor profile: Prakash C.

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Prakash C.
Tutor for Four Years
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## Questions

### Subject:Basic Math

TutorMe
Question:

Mrs. Rodger got a weekly raise of \$145. If she gets paid every other week, write an integer describing how the raise will affect her paycheck.

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Prakash C.

Let the 1st paycheck be x (integer). Mrs. Rodger got a weekly raise of \$ 145. So after completing the 1st week, she will get \$ (x+145). Similarly after completing the 2nd week she will get \$ (x + 145) + \$ 145. = \$ (x + 145 + 145) = \$ (x + 290) So in this way end of every week, her salary will increase by \$ 145.

### Subject:Chemistry

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Question:

What is a buffer?

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Prakash C.

A buffer is an aqueous solution which has highly stable pH. It is a blend of a weak acid and its conjugate base or vice versa. On adding a small amount of base or acid to buffer, its pH hardly changes.

### Subject:Physics

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Question:

How come in free fall you feel weightless even though gravity is pulling down on you?

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Prakash C.

The reason you feel weightless is that there is no force pushing against you since you are not in contact with anything. Gravity is pulling equally on all the particles in your body. This creates a sensation where no forces are acting on you and you feel weightless. It would be the same sensation as if you were floating in space.

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