Sabendo que a energia cinética pode ser determinada usando a equação EC = (½)m. v2, calcule a energia cinética associada à um carro, com massa de 1500 kg, que se move com velocidade de 20 m/s.

What is the role of the ocular lens?

Two polarizers are oriented at 70∘∘ to one another. unpolarized light falls on them. what fraction of the light intensity is transmitted?

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?