The law of optics applicable in this scenario is the Snell's Law which states that the ratio of the index of refraction of two media is equal to the ratio of the sine of the angle of reflection and sine of the angle of refraction. In equation form:
n₁ / n₂ = sin b / sin a

8 0

2 years ago

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What are the real zeros of the function g(x)=x^3+2x^2-x-2

Gre4nikov [31]

$g(x)=x^3+2x^2-x-2\\\\\text{The zeros:}\\\\g(x)=0\to x^3+2x^2-x-2=0\\\\x^2(x+2)-1(x+2)=0\\\\(x+2)(x^2-1)=0\iff x+2=0\ \vee\ x^2-1=0\\\\x+2=0\ \ \ |-2\\x=-2\\\\x^2-1=0\ \ \ |+1\\x^2=1\to x=\pm\sqrt{1}\to x=-1\ \vee\ x=1\\\\\text{Answer:}\ x=-2\ or\ x=-1\ or\ x=1$

4 0

2 years ago

Plzzzzzzzzzzzzzzzzzzzzzzzzzzz in need help

scoundrel [369]

Answer:

I think it's C but I'm not too sure

3 0

2 years ago

Jason is planning to replace carpet in the utility room of his house the length of the room is 8 feet and the width of the room

olganol [36]

Given Information:

Length of room = l = 8 feet

Width of room = w = 7 feet

Required Information:

Amount of carpet = ?

Answer:

Amount of carpet = 56 ft²

Step-by-step explanation:

Jason wants to replace the carpet in the utility room of his house.

We are given the dimensions of the room and we are asked to find the required amount of carpet in square feet.

The required amount of carpet is given by

$A = w\times l$

where w is the width of room and l is the length of the room.

$A = 7\times 8\\\\A = 56 \:$

Therefore, Jason need 56 square feet of carpet for the utility room.

6 0

2 years ago