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3 years ago

Sound and light are both found as (4)

Chemistry

1 answer:

Mrrafil [7]3 years ago

7 0

Answer:

Waves; wavelength; electromagnetic energy; ultraviolet light.

Explanation:

Sound are mechanical waves that are highly dependent on matter for their propagation and transmission.

Sound travels faster through solids than it does through either liquids or gases.

Lightwave can be defined as an electromagnetic wave that does not require a medium of propagation for it to travel through a vacuum of space where no particles exist.

Hence, sound and light are both found as waves, with a variety of wavelengths. The sun, a source of light waves specifically, releases a type of electromagnetic energy. It can be found as UVA or UVB types. These lights give off different levels of ultraviolet light, some of which can be harmful.

Additionally, the ultraviolet spectrum is divided into three categories and these are; UVA, UVB ,and UVC.

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It’s science, the theme is Characteristics of Electromagnetic and mechanical waves

anygoal [31]

1. False

2. True

3. True

4. False

5. True.

6. False.

7. True.

8. False.

9. False.

10. True.

11. False.

<h3>Explanation:</h3>

A wave is a disturbance in a medium which can propagate through a medium. But the net displacement of the medium remains zero.

The spreading of the wave from a slit or hole is proved through the double slit experiment showing interference between the two waves. So they do spread by passing through a hole.

A longitudinal wave is what is seen when a stone is thrown into a pond. The ripples created are the compression points and the areas between the two ripple is called the rarefaction point.

Amplitude is defined as the maximum displacement of a particle in wave from its mean position. So its not distance between two compression points.

2nd law of reflection states that the angle of incidence is equal to angle of reflection.

An electromagnetic wave doesn't need a matter to get transferred. Its the electric field and magnetic field vibrating at same interval but in 90°to each other.

Mechanical wave needs matter to transfer energy. So it cannot travel through space.

Decibel is the unit of intensity of sound. Unit of frequency is hertz or cps.

8 0

3 years ago

a certain gas occupies 5 dm³ at 24 °C and 15 cm Hg. Calculate the pressure of the gas if the volume is halved and the temperatur

Fantom [35]

Explanation:

(P1V1)/T1=(P2V2)/T2

(15X5)/297=(p2x2.5)/473

p2=47.78cmHg

7 0

3 years ago

How many atoms (mol) is in 10g of sodium, sodium chloride and Iron chloride?

SashulF [63]

Answer:

See explanation

Explanation:

Molar mass of NaCl = 58.5 g

Number of moles contained in 10 g of NaCl = 10 g/58.5 g = 0.17 moles

If 1 mole of NaCl contains 6.02 * 10^23 atoms

0.17 moles of NaCl contains 0.17 * 6.02 * 10^23 atoms = 1.02 * 10^23 atoms

Molar mass of Fe II chloride = 126.751 g/mol

Number of moles = 10 g/126.751 g/mol = 0.0789 moles

Number of atoms = 0.0789 moles * 6.02 * 10^23 atoms = 4.7 * 10^22 atoms

Molar mass of Na = 23 g/mol

Number of moles = 10g/23 g/mol = 0.43 moles

Number of atoms = 0.43 moles * 6.02 * 10^23 atoms = 2.59 * 10^ 23 atoms

8 0

3 years ago

Which part of the electromagnetic spectrum is nearest to radio waves? X-rays microwaves gamma rays ultraviolet light

sp2606 [1]

Answer:

ultraviolet .rays....hope am correct

8 0

3 years ago

Which method is the typical first step when scientists communicate their scientific results?

hodyreva [135]

Purpose
prediction
procedure
data
calculation
conclusion - results etc.

5 0

3 years ago

Read 2 more answers