Atrain travels 55 kilometers in 2 hours, and then 52 kilometers in 5 hours. what is its average speed?

Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering

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.)

What effect does the sun have on the earth. written response