Tuesday
March 31, 2015

Homework Help: Physics

Posted by Vanda on Friday, March 18, 2011 at 4:17pm.

A special kind of light bulb emits monochromatic light of wavelength 630 nm. Electrical energy supplied to it at the rate of 60W, and the bulb is 93% efficient at converting that energy into light energy. How many photons are emitted by the bulb during its life time of 730h?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

physics - An oven is plugged into a 120 V electrical outlet and "cooks" the ...
physics - The Easy Bake Oven is a common toy for young children who want to ...
physics....again - A typical light bulb is 2% efficient. It means that only 2% ...
electrical circuit - When a second light bulb is wired into an electric circuit ...
physics - A 60W light bulb is connected to a 120V outlet. How long in seconds ...
physics - You are in the lab with a 10 V battery. You have a 10 W light bulb and...
college physics - You are in the lab with a 10 V battery. You have a 10 W light ...
physics - The current through a light bulb connected across the terminals of a ...
physics - It has been proposed to use large inductors as energy storage devices...
chemistry-check answer - Suppose you have a 10 watt fluorescent light bulb. If ...

Members