You and your friend Bruce are experimenting with a red lamp shade and blue lamp shade. You place lamp shades individually over a 120-W light bulb. Assume that the light radiates from the lamps uniformly and 7.8% of their power is converted to light. (a) What is the average intensity of the light at 2.0 m from the red (? = 710 nm) lamp shade? ___________________ W/m2
You and your friend Bruce are experimenting with a red lamp shade and blue lamp shade. You place lamp shades individually over a 120-W light bulb. Assume that the light radiates from the lamps uniformly and 7.8% of their power is converted to light. (a) What is the average intensity of the light at 2.0 m from the red (? = 710 nm) lamp shade? ___________________ W/m2
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter16: Waves
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Problem 79P: A device called an insolation meter is used to measure the intensity of sunlight. It has an area of...
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You and your friend Bruce are experimenting with a red lamp shade and blue lamp shade. You place lamp shades individually over a 120-W light bulb. Assume that the light radiates from the lamps uniformly and 7.8% of their power is converted to light.
(a) What is the average intensity of the light at 2.0 m from the red
(? = 710 nm)
lamp shade?___________________ W/m2
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