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kati45 [8]
4 years ago
5

Why were changes to the atomic theory necessary

Chemistry
2 answers:
krek1111 [17]4 years ago
7 0
Explanation: Thomson's experiments with cathode ray tubes helped him to discover the electron (which Dalton did not know about). Dalton thought that atoms were indivisible particles, and Thomson's discovery of the electron proved the existence of subatomic particles.













Hopes this helps :)
sergiy2304 [10]4 years ago
5 0
In chemistry and physics, the atomic theory explains how our understanding of the atom has changed over time. Atoms were once thought to be the smallest pieces of matter. However, it is now known that atoms are made up of protons, neutrons, and electrons. These subatomic particles are made up of quarks.
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Difference between nitrogen fixatio and dentrification
gavmur [86]
Nitrogen fixation means form nitrits and dentrification means nitrits will not formed
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3 years ago
The specific gravity of water is 1.0. True False
Zielflug [23.3K]
The specific gravity of water is 1.0 True 
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3 years ago
Two common uses for electromagnets are _____.
Novosadov [1.4K]

Two common uses for electromagnets are _producing strong magnetic fields_& __electrical switches_.

Explanation:

An electric current can turn a ferromagnetic material temporarily magnetic using Faraday's principle, if the wire carrying the current is wound in coils around the ferromagnetic material. When the electric current is turned on the ferromagnetic material, such as iron, becomes magnetic but loses the magnetism when the current is switched off. This application can be used in a junkyard where a crane with a ferromagnetic arm can lift scrap cars from one point and dump them is a scrapper.

An electromagnet switch can also be applied in the switching on and off of a larger current. These are called relay switches. When the smaller current is turn on, it magnetizes a ferromagnetic material. The magnet then attracts another metal that is attached to a contact arm of a switch. The attraction results in the closing of a switch  of a larger current. When the smaller current is switched off, the loss of magnetism causes the metal with the contact arm to open the larger switch.

Learn More:

For more on electromagnets check out;

brainly.com/question/12350331

brainly.com/question/13445759

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6 0
3 years ago
Question 22 A VHF television station assigned to channel transmits its signal using radio waves with a frequency of . Calculate
aleksklad [387]

The question is incomplete, here is the complete question:

A VHF television station assigned to channel transmits its signal using radio waves with a frequency of 66.0 MHz. Calculate the wavelength of the radio waves. Round your answer to 3 significant digits.

Answer: The wavelength of the radio waves is 4.54 m

<u>Explanation:</u>

To calculate the wavelength of light, we use the equation:

\lambda=\frac{c}{\nu}

where,

\lambda = wavelength of the light

c = speed of light = 3\times 10^8m/s

\nu = frequency of light = 66.0MHz=66.0\times 10^6s^{-1}

Putting the values in above equation, we get:

\lambda=\frac{3\times 10^8m/s}{66.0\times 10^{6}s^{-1}}=4.54m

Hence, the wavelength of the radio waves is 4.54 m

6 0
4 years ago
Slow cooling of hot magma leads to the formation of ___________ crystals
Inessa05 [86]

Answer:

Slow cooling leads to the formation of large crystals. If the crystals remain undisturbed while cooling, they grow according to a regular pattern. Magma closer to the surface cools much faster than magma that hardens deep below ground. With rapid cooling, there is no time for magma to form large crystals.

Explanation:

Hope it's help

8 0
2 years ago
Read 2 more answers
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