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3 years ago

What device produces light by running an electric current through a gas

Physics

1 answer:

Andrej [43]3 years ago

4 0

Answer:

fluorescent bulb

Explanation:

A fluorescent bulb is what produces light.

It produces light by passing electric current through a gas to

A fluorescent lamp, is a low-pressure mercury vapor and a gas-discharge lamp that uses fluorescence to produce visible light. like the ones we see. An electric current in the gas excites mercury vapor, and that produces a short wave ultraviolet light and well that causes a phosphor coating on the inside of the lamp to glow. i tried making this sound as simple as possible.

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TECHNOLOGY A Lamborghini Aventador accelerates from rest to 100 km / h in 2.9 s. The mass of the car is 1575 kg Calculate the po

DerKrebs [107]

At 100 km/hr, the car's kinetic energy is

KE = (1/2) (mass) (speed)²

KE = (1/2) (1575 kg) ( [100 km/hr] x [1000 m/km] x [1 hr/3600 sec] )²

KE = (787.5 kg) (27.78 m/s)²

KE = 607,639 Joules

In order to deliver this energy in 2.9 seconds, the engine must supply

(607,639 J / 2.9 sec) = 209,531 watts

<em>Power = 281 HP</em>

6 0

3 years ago

The displacement (in meters) of a particle moving in a straight line is given by the equation of motion s = 6/t2, where t is mea

ycow [4]

Answer:

Velocity of the particle at time t = a

$v(a)=-\frac{12}{a^3}$

Velocity of the particle at time t = 1

$v(1)=-12m/s$

Velocity of the particle at time t = 2

$v(2)=-1.5m/s$

Velocity of the particle at time t = 3

$v(3)=-0.44m/s$

Explanation:

Displacement,

$s(t)=\frac{6}{t^2}$

Velocity is given by

$v(t)=\frac{ds}{dt}=\frac{d}{dt}\left ( \frac{6}{t^2}\right )=-\frac{12}{t^3}$

Velocity of the particle at time t = a

$v(a)=-\frac{12}{a^3}$

Velocity of the particle at time t = 1

$v(1)=-\frac{12}{1^3}=-12m/s$

Velocity of the particle at time t = 2

$v(2)=-\frac{12}{2^3}=-1.5m/s$

Velocity of the particle at time t = 3

$v(3)=-\frac{12}{3^3}=-0.44m/s$

8 0

3 years ago

A bicycle travels 6.10 km due east in 0.210 h, then 11.30 km at 15.0° east of north in 0.560 h, and finally another 6.10 km due

Virty [35]

Answer:

Explanation:

Given

First bicycle travels 6.10 km due to east in 0.21 h

Suppose its position vector is $r_1$

$r_1=6.10\hat{i}$

After that it travels 11.30 km at $15^{\circ}$ east of north in 0.560 h

suppose its position vector is $r_2$

$r_{2}=11.30\left ( cos15\hat{j}+sin15\hat{i}\right )$

after that he finally travel 6.10 km due to east in 0.21 h

suppose its position vector is $r_3$

$r_{3}=6.10\hat{i}$

so position of final position is given by

$r=r_1+r_{2}+r_{3}$

$\vec{r}=15.12\hat{i}+10.91\hat{j}$

$\vec{v_{avg}}=\frac{\vec{r}}{t}$

t=0.21+0.56+0.21=0.98 h

$\vec{v_{avg}}=15.42\hat{i}+11.13\hat{j}$

$|v_{avg}|=\sqrt{361.71}=19.01 km/hr$

For direction

$tan\theta =\frac{11.13}{15.42}=0.721$

$\theta =35.791^{\circ}$ w.r.t to x axis

5 0

4 years ago

The picture below shows the position of Earth and two stars.

alexgriva [62]

The answer is:

18 years.

The explanation:

when Star 1 is 34 light years from Earth and Star 2 is 52 light years from Earth. that means the distance between star 1 and star 2 is 52-34 = 18 years so, If Star 2 explodes as a supernova so, the explosion would take 18 years to be seen from a planet orbiting Star 1.

8 0

3 years ago

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Metals such as aluminum can be formed into thin sheets because they are

Korvikt [17]

Answer:

They are malleable.

Explanation:

Malleability is the property of metals that causes them to be able to be formed into thin sheets without breaking.

All metals are malleable.

The reason why metals are malleable is because the atoms in the metals have a stable structure and hence, when beaten, the atoms can move freely among each other and maintain their structure.

8 0

3 years ago

Read 2 more answers