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3 years ago

What is actually creating the light in the light bulb?

2 answers:

6 0

The light in the light bulb is simply the resultant of photon emission through a thin filament often made of tungsten.

<u>Explanation :</u>

Explaining the structure, a light bulb is simply composed of a metal base with two metal contacts. These contacts are attached to the current conducting wires that are attached to a thin filament often made of Tungsten.

The whole system is enclosed within a light bulb filled with an inert gas Argon. On connecting the light bulb to the electric supply, the current flows through the wires and heats up the filament that emits photons, containing visible light energy. This is how we get a lighted bulb.

The invention of a light bulb has always been one of the biggest inventions in the world of science and technology that has lightened up not only the world but the lives. All credit goes to Sir Thomas Alva Edison and Sir Joseph Swan.

gizmo_the_mogwai [7]3 years ago

3 0

Positive and negative charge

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How can you produce more power than an excavator?

alina1380 [7]

Just do energy spent divided by time to get your answer. With this we can say a human might be able to!

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3 years ago

Read 2 more answers

When point charges q = +8.4 uC and q2 = +5.6 uC are brought near each other, each experiences a repulsive force of magnitude 0.6

Stella [2.4K]

Answer:

it is separated by 80 cm distance

Explanation:

As per Coulombs law we know that force between two point charges is given by

$F = \frac{kq_1q_2}{r^2}$

here we know that

$q_1 = +8.4\mu C$

$q_2 = +5.6 \mu C$

force between two charges is given as

$F = 0.66 N$

now we have

$F = \frac{kq_1q_2}{r^2}$

$0.66 = \frac{(9\times 10^9)(8.4 \mu C)(5.6 \mu C)}{r^2}$

$r = 0.8 m$

so it is separated by 80 cm distance

3 0

3 years ago

Read 2 more answers

18. How does magnetic force affect the energy in a system of magnets when the magnets are released and begin to move? a The magn

astra-53 [7]

When the magnets are released and begin to move, the magnetic force changes potential energy into kinetic energy;<u> option D</u>

<h3>What is magnetic force?</h3>

Magnetic force can be defined as the force of attraction or repulsion that is felt or produced between the magnetic poles and electrically charged moving particles.

Magnetic force is the force that exists due to the attractio or repulsion of objects place around the region of space where a maget exerts its force.

When a magnet is released ai a system of magnets and allowed to move it increases the kinetic eergy of the system by converting potential energy to kinetic energy.

Learn more about magnetic force at: brainly.com/question/28989998

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1 year ago

A pitcher throws a 0.140 kg baseball, and it approaches the bat at a speed of 35.0 m/s. The bat does Wnc = 75.0 J of work on the

Eva8 [605]

Answer:

The speed of the ball is 42.5 m/s

Explanation:

The initial kinetic energy of the ball is:

$K_1=\frac{1}{2} m v_0^2=\frac{1}{2}*0.140 kg*(35.0 m/s)^2$ = 85.75 J

The speed of the ball after leaving the bat is:

$K_2=K_1+W_{nc}\\ \frac{1}{2}mV^2= 85.75 J + 75 J\\ (\frac{1}{2}mV^2)2=( 160.75 J)2\\ mV^2= 321.5 J\\ V^2= \frac{321.5 J}{0.140kg} \\ V=\sqrt{\frac{321.5 J}{0.140kg}}$