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3 years ago

When a high voltage is applied to a low-pressure gas causing it to glow, it will generate which type of spectrum

Physics

1 answer:

Brrunno [24]3 years ago

5 0

Answer:

Line emission.

Explanation:

According to Isaac Newton, he postulated that light consists of little (tiny) particles which typically travels in a straight line and from his experimental investigation he observed that white light comprises of a mixture of colors.

Sir Newton observed that, when light shines on a piece of metal, the metal releases electrons because the energy of the tiny light particles are greater than the binding energy of the electrons residing in the metal. This theory is known as the particle model of light.

A line emission would appear in a spectrum when specific wavelength is being emitted by the source of light.

When a high voltage is applied to a low-pressure gas causing it to glow, it will generate line emission.

For example, if a sample of hydrogen gas at low-pressure undergoes or experiences a high voltage electrical discharge, the isolated hydrogen gas would generate a red light (line emission).

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URNOW Lidl llIIS 15 TIUta WiCluie U water!<br> ify-What two kinds of matter are pure substances?

Arada [10]

Elements and compounds

Explanation:

All pure substances are distinct substances.
All their parts are the same throughout i.e they are homogeneous.
They have a definite composition.
They cannot be easily separated or broken down into simpler substances by physical means.
They have a unique set of physical properties.

Elements are distinct substances that cannot be split up into simpler ones.

Compounds are substances composed of two or more kinds of atoms joined together in a definite grouping.

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3 years ago

What is the work done in lifting 60 kg of blocks to a height of 20m

erastovalidia [21]

Answer:

The answer is 1200

Explanation:

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2 years ago

What are the energy transfers in a torch?

lapo4ka [179]

Explanation:

The battery is a store of internal energy (shown as chemical energy). The energy is transferred through the wires to the lamp, which then transfers the energy to the surroundings as light. These are the useful energy transfers - we use electric lamps to light up our rooms.

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3 years ago

||||| A ball on a porch rolls 60 cm to the porch’s edge, drops 40 cm, continues rolling on the grass, and eventually stops 80 cm

3241004551 [841]

Answer:

$d = 145.6 cm$

Explanation:

first ball rolls on the porch by total distance

$x_1 = 60 cm$

Then again it will move on horizontal floor

$x_2 = 80 cm$

also in vertical direction it will drop down

$y = 40 cm$

so we have

$x = 60 + 80$

$x = 140 cm$

$y = 40 cm$

so magnitude of net displacement of the ball is given as

$d = \sqrt{140^2 + 40^2}$

$d = 145.6 cm$

8 0

3 years ago

State two uses of high specific heat of water

Nitella [24]

It helps in regulating extremes in the environment.

It can be used as a car radiators.

<u>Explanation:</u>

The amount of heat needed to raise a certain amount of temperature to the water is known as the specific heat of the water. For one gram of water to increase 1 degree celsius, water needs to absorb 4.184 J of heat.

Some of the uses of high specific heat of water are as follows,

The temperature of the water will remain the same from day to night in ponds or sea. During day time, the hot air from the sea or pond rises while the cool air from the sea moves to take its place. During the night, the hot air from the land moves to take its place, giving rise to a land breeze and thus maintaining the environment.

Another example, When water is circulated throughout an engine, heat will get absorbed. This water is pumped to a radiator and then disposed to the surrounding air.

7 0

4 years ago