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3 years ago

PLEASE HELP! AWARDING BRAINLIEST!

Physics

2 answers:

yawa3891 [41]3 years ago

8 0

An atom is represented by

$_z^AX$

here we know that

z = number of protons which gives an idea of positive charge of atom

A = mass number

it is the sum of number of protons and neutrons of an atom which will help us to calculate the mass of the atom

So here mass number A will give us an idea about the mass of atom

so correct answer will be

<em>A) It contains most of the mass.</em>

svetoff [14.1K]3 years ago

7 0

Answer:

The answer is A. It contains most of the mass <3

Explanation:

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Complete the sentence. Friction always ____________

luda_lava [24]

Answer:

B- Opposes the motion

Explanation:

When two object touches each other. friction acts in a opposite direction to the motion of the object

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3 years ago

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steposvetlana [31]

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After a check up, a person now has a far point of 100 cm, but with good near point vision. He needs to wear a new pair of correc

lakkis [162]

Answer:

so his far point according to this pair of glass is 200 cm

Explanation:

power of old pair of corrective glasses is given as

$P = -0.5 dioptre$

now we have

$f = \frac{1}{P}$

$f = -2 m$

$f = -200 cm$

now we know that for normal vision the maximum distance of vision is for infinite distance

so by lens formula we have

$\frac{1}{d_i} + \frac{1}{d_o} = \frac{1}{f}$

$\frac{1}{d_i} + 0 = \frac{1}{200}$

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so his far point according to this pair of glass is 200 cm

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3 years ago

What happens when two waves meet

olganol [36]

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3 years ago

First, water evaporates from the ocean to the atmosphere, then ____________. put each step in the correct order.

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Fourth- precipitation falls from clouds to the land.
Fifth- some water stored as snow or ice.
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3 years ago