shikiaanthony

05.10.2020 • 

Physics

A rabbit runs across a parking lot on which a set of coordinate axes has, strangely enough, been drawn. The co-
ordinates (meters) of the rabbit's position as functions of
time t (seconds) are given by
x = -0.31t2 + 7.2t + 28
and
y = 0.22t2 – 9.1t + 30.
Att = 15 s, what is the rabbit's position vector r in unit-
vector notation and in magnitude-angle notation?

Ответ:

sweetluvs7865

08.01.2021

Physics

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i-beams are the choice for structural skyscrapers because of their high functionality.

the shape of i-beams makes them excellent for unidirectional bending parallel to the web.

the horizontal flanges resist the bending movement, while the web resists the shear stress.

                                           ♡  hope this helped!  ♡

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