Which of the following is group 1? a. alkali metals b. alkaline earth metals c. halogens d. transition metals

What is the significance of Einstein's famous equation E = mc2? Energy is not related to mass. Mass can be destroyed. Energy can be destroyed. Mass and energy can convert to one another.

What are real life examples of work not being done

How does a topographic map indicate the direction that a stream flows?

What is the theory of relativity.

Is there any relation between distance and the colors we see?

A linearly-polarized electromagnetic (EM) wave has an electric field with amplitude 1000 V/m. You hold a a linear polarizer in front of it and rotate the polarizer so that all of the EM wave is blocked. You then rotate the polarizer 30 degree.

Let y'=4 x. find all values of r such that y = rx^{2} satisfies the differential equation. if there is more than one correct answer, enter your answers as a comma separated list.

What are the starting materials for nuclear fission

Why is it possible to throw a 0.145 kg baseball much further than a 7 kg bowling ball?

What is the name of the force that opposes or slows down the motion of objects