The rate at wich energy is used in a circuit

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z

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.)

The three classes of rocks are sedimentary, metamorphic, and igneous. how are rocks classified into one of these three groups?