2 years ago

PLEASE HELP I need the answer to this question ASAP

Physics

2 answers:

cestrela7 [59]2 years ago

7 0

Answer:

answer is A

Explanation:

hope this helps!

Simora [160]2 years ago

7 0

Answer:

ray 2 is the refracted ray

Explanation:

ray 1 and 2 are balanced because if there is a mirror under the ray then the ray would be balance with the source of the ray. p.s only did this for brainliest

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An ant travels 2.78 cm (West) and then turns and travels 6.25 cm (South 40 degrees East). What is the ant's total displacement?

andrey2020 [161]

$From\ cosine\ theorem:\\\\
c^2=a^2+b^2-2abcos(\angle between\ a\ and\ b)\\\\
a=2,78\\b=6,25\\
\angle between\ a\ and\ b=90+50=140^{\circ}\\\\
c^2=2,78^2+6,25^2-2*2,78*6,25cos(140^{\circ})\\\\
c^2=7,7284+39,0625-34,75*(-0,77)\\\\c^2=46,7909+26,7575\\\\c^2=735484\\\\c=8,58cm\\\\Total\ displacement\ is\ equal\ to\ 8,58cm.$