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pav-90 [236]
3 years ago
11

Volcano has both useful and harmful effects give reason​

Physics
2 answers:
Mama L [17]3 years ago
6 0

Answer:

useful effects of volcano are :-

  1. it makes soil fertile
  2. it provides valuable nutrients for the soil

harmful effects of volcano are:-

  1. it makes air polluted
  2. it destroy the environment .

hope it is helpful to you ☺️

alina1380 [7]3 years ago
3 0

Answer:

harmful effects

1. that will cause air pollution

2. that will destroy our earth

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Defined the term electromagnetic induction and explain how a generator uses electromagnetic induction​
tatuchka [14]

Is the production of electricity by magnetic field.

There are two types of generator which is <u>D</u><u>.</u><u>C</u><u> </u>generator . And A.C <em>g</em><em>e</em><em>n</em><em>e</em><em>r</em><em>a</em><em>t</em><em>o</em><em>r</em>

A.C gen consist of rectangular coil,brushes and permanent magnet

According to the external force mechanical energy used to rotate coil, due to magnetic flux produced by permanent magnet create induced current, this is to according to flemmings right hand rule of electromagnetic induction the rotating coil will produce current

I hope that will help.

8 0
3 years ago
How many significant figures are in 107 moles of sodium
Blizzard [7]

Answer:

3 significant figures

Explanation:

here  zero is counted as one of the significant figures since it lies next to an integer.

hence the number has 3 sfg

8 0
3 years ago
What is elasticity in polymer generally related to?
Andrej [43]
The elasticity of a polymer is primarily due to the structure of the molecule and the cross-linking between strands. Hydrogen bonding is a contributor to the shape of the molecule, but not a major player in terms of elasticity. We would have to answer "false".
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6 0
3 years ago
Read 2 more answers
An airplane has an average speed of 740 mph
crimeas [40]

Answer:

2590

Explanation:

7 0
3 years ago
Which of the following statements about X-rays and radio waves is not true? Which of the following statements about X-rays and r
Lapatulllka [165]

Answer:

X-rays travel through space faster than radio waves.

Explanation:

Electromagnetic waves consist of oscillations of the electric and the magnetic field in a plane perpendicular to the direction of motion the wave.

All electromagnetic waves travel in a vacuum always at the same speed, the speed of light, whose value is:

c=3.0\cdot 10^8 m/s

Electromagnetic waves are classified into 7 different types, according to their wavelength/frequency. From shortest to longest wavelength (and so, from highest to lowest frequency), we have:

Gamma rays

X rays

Ultraviolet

Visible light

Infrared radiation

Microwaves

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Now we can analyze the 4 statements:

X-rays and radio waves are both forms of light, or electromagnetic radiation --> TRUE. They are both types of electromagnetic waves.

X-rays have higher frequency than radio waves. --> TRUE, as we can see from the table above.

X-rays have shorter wavelengths than radio waves. --> TRUE, as we can see from the table above.

X-rays travel through space faster than radio waves. --> FALSE: all electromagnetic waves travel in space at the same speed, the speed of light.

8 0
3 years ago
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