Express what is the light intensity on a wall

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Q. A baseball pitcher throws a pitch with a initial velocity of 46.5 m/s, directed horizontally. How far does the ball drop vertically by the time it reaches the plate 18.0 m away?

Q. A krypton laser produces a cylindrical red laser beam 2.0 {rm mm} in diameter with 2.0 {rm W} of power. What is the light intensity on a wall 0.60 m away from the laser?

Reference no: EM1365339

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