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trasher [3.6K]
3 years ago
11

A ___ is one way a star might die and it can trigger the beginning of a new stars life cycle .

Physics
1 answer:
Goryan [66]3 years ago
4 0
The correct answer is Supernova. 
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Describe how two isotopes of nitrogen differ from two nitrogen ions???PLEASE ANSWER 20 POINTS
Wewaii [24]

Nitrogen isotopes don't have a charge.


3 0
3 years ago
Which of the following items involve a wedge?
elena55 [62]

Answer:

D

Explanation:

Maybe your question is meant to be: which is not a wedge, because wedge is a combination of two inclined planes, use to separate bodies which are held together by large forces. Option A,B & C are all wedge except D.

8 0
3 years ago
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Which of the statements given below is correct? 1. In winter, the wind blows from land to oceans. 2. In summer , the winds blow
densk [106]

Answer:

The second one should be correct

3 0
3 years ago
nsider a common mirage formed by superheated air immediately above a roadway. A truck driver whose eyes are 2.00 m above the roa
Anna11 [10]

Answer:

n_{air}  =1.0000355

Explanation:

from snells law we have following relation

n' Sin i = n_{air} Sin r


n_{air} is refractive index of air

n' -  refractive index of air below

i is angle of incidence = 90 - 1.30 = 88.70^o

r is refraction angle

plugging all value in above formula

1.000293 \times sin 88.7 = n_{air} \times sin 90

n_{air}  =1.0000355

6 0
3 years ago
All of the alkali metals, Group 1, have one valence electron. Which of these would represent the oxidation number of the alkali
melamori03 [73]
The elements found in the Group 1, or the Alkali Metal Group, have electronic configurations that end in s^{1}.This means that they have 1 electron readily available to release in order to achieve a stable state. 

When these atoms release the valence electron, they will achieve a stable state. For example, Lithium's stable state will be Li^{+} and Sodium will be Na^{+}. 

The oxidation state will then be +1. 

The answer is C. 


8 0
3 years ago
Read 2 more answers
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