D. colour blindness
"red-sensitive" just means that the nerves are able to see red light
Answer:
Matter is anything that has mass and takes up space. A mixture is matter that can vary in composition.....because, the substances in a heterogeneous mixture are not evenly mixed, two samples of the same mixture can have different amounts of the substance....
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I’m kinda lost on what this question is asking but wouldn’t it be something like 3 m/s west-
<span>The condition alone that is necessary so that the final kinetic energy of the system is zero after the collision is that the
objects must have momenta with the same magnitude but opposite directions.</span>
Answer:
![\frac{L_1}{L_2} = \sqrt{(n^2 - 1)}](https://tex.z-dn.net/?f=%5Cfrac%7BL_1%7D%7BL_2%7D%20%3D%20%5Csqrt%7B%28n%5E2%20-%201%29%7D)
Explanation:
For this interesting problem, we use the definition of centripetal acceleration
a = v² / r
angular and linear velocity are related
v = w r
we substitute
a = w² r
the rectangular body rotates at an angular velocity w
We locate the points, unfortunately the diagram is not shown. In this case we have the axis of rotation in a corner, called O, in one of the adjacent corners we call it A and the opposite corner A
the distance OB = L₂
the distance AB = L₁
the sides of the rectangle
It is indicated that the acceleration in in A and B are related
we substitute the value of the acceleration
w² r_A = n r_B
the distance from the each corner is
r_B = L₂
r_A =
we substitute
\sqrt{L_1^2 + L_2^2} = n L₂
L₁² + L₂² = n² L₂²
L₁² = (n²-1) L₂²