On May 20, 1999, Robbie Knievel easily cleared a narrow part of the Grand Canyon during a world-record-setting long-distance motorcycle jump-69.5 m. He left the jump ramp at a 10 degree angle above the horizontal. How fast was he traveling when he left the ramp? Indicate any assumptions you made.

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.)

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.

Petroleum contains energy. a. light b. kinetic c. chemical d. mechanical