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zubka84 [21]
3 years ago
7

Question 1

Physics
1 answer:
Alekssandra [29.7K]3 years ago
6 0

Answer:

negatively charged object is  is an object that has an excess of negative electrons and its the circle with the this symbol "-" and a positively charged object  is an object that has an excess of positive electrons  its the circle with the this symbol "+" .

tip: just remember the circles with the + and - symbol

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Why are we not crushed by the weight of the atmosphere on our shoulders?
antiseptic1488 [7]

Answer:

Due to equal pressure in all the direction at a particular level in a fluid medium (Pascal's Law)

Explanation:

We are not crushed by the weight of the atmosphere because atmosphere is a fluid and we are immersed into it. So, according to the Pascal's law the the pressure a each point in a horizontal level is equal in all the direction irrespective of the orientation of a body.

Variation of pressure in term of the height of a fluid medium is given as:

P=\rho.g.h

\rho=density of fluid

g = acceleration due to gravity

h = height of the free surface of the fluid from the immersed object.

  • And atmosphere has very less variation of pressure with change in height as it is a rare medium fluid and so for a human height there is very negligible variation of pressure at the heat of a human with respect to his toe.

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Answer:

the answer is C.

Explanation:

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Different kinds of lenses are used in eyeglasses to help people with eye conditions. Farsightedness is an eye condition in which
andriy [413]

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tyy

Explanation:

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2 years ago
Two friends whisper at a volume of 20 decibels. Later, they converse at a volume of 40 decibels.
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40 dB is 20 dB more power than 20 dB is. 20 dB more means 100 times as much.
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an impulse is a force acting over some amount of time to cause a change in momentum. on the other hand, work is a
finlep [7]

Answer:

force; distance; energy.

Explanation:

An impulse can be defined as the net force acting an object for a very short period of time.

Mathematically, impulse is given by the formula;

Impulse = force * time

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Work done = force * distance

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2 years ago
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