Answer:
An LED light uses one-third the energy of an incandescent bulb to produce the same amount of light.
Step-by-step explanation:
A typical 100 W incandescent bulb produces about <em>5 % visible light</em>, 83 % IR radiation, and 12 % heat (it is the IR radiation that makes the bulb feel hot).
It produces about 5 J of light energy for every 100 J of energy input.
A typical LED bulb produces about <em>15 % visible light</em> and 85 % heat (LEDs feel cool, because they don't produce IR radiation).
It produces about 15 J of light energy for every 100 J of energy input.
Thus, an LED light is about three times as efficient at converting electrical energy into light
Density = mass / volume
D = 5.2 / 0.117
D = 44.44
Answer:
Explanation:
Balance is achieved when a reaction is in equilibrium.
At equilibrium, the rate of forward reaction is equal to the rate of backward or reverse process.
