October 6, 2015

Homework Help: Physics

Posted by Alex on Tuesday, March 5, 2013 at 10:25pm.

A 100 watt bulb emits light in all directions. The distance R from the bulb is equal to 1.0 meter.

Complete the table below with calculated values of intensity of the bulb.

Distance from Source Intensity (W/m2)
R ?

2R ?

3R ?

c) If the bulb was replaced by a 75 watt bulb, at position 2R the intensity would be?

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