3 years ago

Why is the light bulb still important today?

1 answer:

5 0

The light bulb provides an easy, safe, cost effective way to convert electrical energy into light. With the simple click of a switch, light is provided. There is no need for any chemical reaction such as burning which can be dangerous. In addition, light bulbs tend to have a reasonable life span and can be easily changed when needed. In today's society, with the increasing number of building which contain areas that are not exposed to natural light, the light bulb is important even during the day.

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the strength s of a rectangular wooden beam is proportional to its width and the cube of is septh. If the beam is to be cut from

babymother [125]

Answer:

Can see it in the pic

Explanation:

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3 years ago

Which if the following statements is true? A. Instantaneous acceleration is always changing. B. An object at rest has an instant

ycow [4]

B is the right one

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4 years ago

Approximately how many degrees does high latitude ocean water change from the ocean surface to a depth of 1 km

saveliy_v [14]

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4 years ago

A heat engine exhausts 8900 j of heat while performing 2800 j of useful work. part a what is the efficiency of this engine?

Anuta_ua [19.1K]

Given: Heat Qout means useful work = 2800 J

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Efficiency = 31.46%

7 0

3 years ago

In most materials, as heat energy is absorbed, density

PtichkaEL [24]

Answer:

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3 years ago