Name one benefit and one limitation of comparative investigations

Most of the mass of the Milky Way exists in the form of A. dust. B. stars. C. dark matter. D. gas.

A physics instructor wants to project a spectrum of visible-light colors from 400 nm to 700 nm as part of a classroom demonstration.

As the temperature decreases, the atoms lose energy. The atoms begin to move slower. They are held together by attractive forces, but are still able to slide past each other.

Which describes why the sun is a renewable resource? The sun creates biomass. The sun is continuously releasing energy. The sun does not cause pollution.

The number of water bottles used during a team's football practice varies directly with the temperature. if a team uses 75 bottles when the temperature is 60°, what is the temperature if they use 120 bottles?

Which of the following water samples would be considered acidic

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?