Mr. smith and his wife were trying to move their new chair. mr. smith pulls with a force of 30 n while mrs. smith pushes with a force of 25 n in the same direction. what is the net force?

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

Much of the information taught in earth-space science would not be available if it weren’t for our remote sensing abilities. explain two ways our remote sensing strategies contribute to our knowledge of these topics.

Which is an example of an exothermic process?