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tatiyna
3 years ago
5

A force has to have which two Factors

Chemistry
2 answers:
HACTEHA [7]3 years ago
7 0
Hiya!
Its B Magnitude and Direction!

Hope This Helps!
(I did the work) :)
monitta3 years ago
4 0
I think that the answer is a size and speed
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Helpp im timed Part A
aksik [14]

Any deviation in the image of an object when light passing from one medium to other is assciated to the phenomenon of refraction.

<h3>What is refraction ?</h3>

It is the deflection from a straight path undergone by a light ray while passing from one medium (such as air) into another (such as glass) in which its velocity is different.


Basically, the light refraction gives the pencil a slight magnifying effect, which makes the angle appear bigger than it actually is, causing the pencil to look crooked.

<h3 />
  • After Looking at the pencil from the side of a clear glass or resealable plastic bag filled three-fourths with water, we will see the light bends around the pencil, causing it to look bent in the water.

  • When the pencil tilt from side to side, It looks so dramatically broken on looking at it from different angles.
    We can magically “fix” the broken pencil by changing where the pencil is positioned in the glass.

Learn more about Light here;
brainly.com/question/22216162

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3 0
2 years ago
The melting points of four impure samples of lead(II) bromide were measured. The results are
CaHeK987 [17]

Answer:

D

372

373

Explanation:

4 0
3 years ago
In the reaction 2co ( g) + o2( g) → 2co2( g), what is the ratio of moles of oxygen used to moles of co2produced?
KIM [24]
In the reaction 2co ( g) + o2( g) → 2co2( g), the ratio of moles of oxygen used to moles of co2produced is 1:2.
8 0
3 years ago
The first ionization energy of mg is 735 kj/mol. calculate zeff.
Novay_Z [31]
2.25 I believe

Hope this helped!
STSN
7 0
3 years ago
The equilibrium concentrations of the reactants and products are [ HA ] = 0.260 M [HA]=0.260 M , [ H + ] = 2.00 × 10 − 4 M [H+]=
ValentinkaMS [17]

Answer:

pKa of the acid HA with given equilibrium concentrations is 6.8

Explanation:

The dissolution reaction is:

HA ⇔ H⁺ + A⁻

So at equilibrium, Ka is calculated as below

Ka = [H⁺] x [A⁻] / [HA] = 2.00 x 10⁻⁴ x 2.00 x 10⁻⁴ / 0.260

    = 15.38 x 10⁻⁸

Hence, by definition,

pKa = -log(Ka) = - log(15.38 x 10⁻⁸) = 6.813

7 0
3 years ago
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