Zeros that follow non-zero numbers and are also to the right of a decimal point are significant. what is the blank i need it asap before 8: 50

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

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.