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2 years ago

13

when light falls obliquely, there is a change in direction as it moves from one medium to another but when it falls perpendicula

r to the surface , there is no change in direction even when two mediums are involved JUSTIFY

1 answer:

exis [7]2 years ago

3 0

Answer:

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2 years ago

A swing that is 9.2m long has a child in it who is swinging. what is its period in seconds

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The child on a swing can be modeled as a simple pendulum. The period of a simple pendulum is given by

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An unbanked circular highway curve on level ground makes aturn

tino4ka555 [31]

Answer:

Explanation:

Given

Velocity of traffic $v=60\ mi/hr\approx 26.82\ m/s$

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to make a safe turn centripetal force with radius of curvature r is given by

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$\frac{mg}{10}=\frac{mv^2}{r}$

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3 years ago

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WITCHER [35]

The answer from the given options is "A. Creep".

Alternate freezing and thawing often leads to "creep".

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