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werty775581
01.06.2021 •
Physics
16. Olympic ice skaters are able to spin at about 5 rev/s.
(a) What is their angular velocity in radians per second?
(b) What is the centripetal acceleration of the skater's nose it
it is 0.120 m from the axis of rotation?
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Ответ:
a) w = 31.4 rad / s, b) a = 118.4 m / s²
Explanation:
a) let's reduce to the SI system
w = 5 rev / s (2pi rad / 1 rev)
w = 31.4 rad / s
b) the expression for the centripetal acceleration is
a = v² / r
linear and angular variables are related
v = w r
we substitute
a = w² r
a = 31.4² 0.120
a = 118.4 m / s²
Ответ:
los neutrinos, sin embargo, participan en interacciones
Explanation: No lleva carga eléctrica. Sin embargo, el hecho de que los neutrinos participen en interacciones con otras partículas muestra que debemos tratar