On a workday an average decibel level of the busy street is, Ask an Expert

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Q1. A krypton laser produces the cylindrical red laser beam 2.0mm in diameter with 2.0W of power. What is the light intensity on a wall 0.70 m away from the laser?

Q2. Estimate g for space shuttle territory, 180km above Earth's surface. Earth's mass is 6 x 10^24 kg and its radius is 6380km.

Q3. On a workday an average decibel level of the busy street is 89 dB, with 100 cars passing a given point every minute. If the number of cars is reduced to 30 every minute on a weekend, what is the decibel level of street?

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