Which characteristics can be used to differentiate star systems? Select three options. the number of stars in the system the level of dust and gas the age of the stars in the system the way stars are organized in the system the color of stars in the system

What is the radius of the circular path ofa charged particle in a magnetic field?

An architect plans to use solar energy to heat the next house he designs. what principle of absorption and infrared energy can be applied to the design of the new house? how could she apply to those principals?

When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)