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3 years ago

Is air made of matter ?evidence and reasoning.

1 answer:

4 0

Yes, air is matter because it is a gas composed mostly of nitrogen, oxygen, and argon, and gases do have mass because they’re molecules bouncing around a contained volume (here, the atmosphere)

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A string of length 100 cm is held fixed at both ends and vibrates in a standing wave pattern. The wavelengths of the constituent

azamat

The wavelengths of the constituent travelling waves CANNOT be 400 cm.

The given parameters:

Length of the string, L = 100 cm

The wavelengths of the constituent travelling waves is calculated as follows;

$L = \frac{n \lambda}{2} \\\\n\lambda = 2L\\\\\lambda = \frac{2L}{n}$

for first mode: n = 1

$\lambda = \frac{2\times 100 \ cm}{1} \\\\\lambda = 200 \ cm$

for second mode: n = 2

$\lambda = \frac{2L}{2} = L = 100 \ cm$

For the third mode: n = 3

$\lambda = \frac{2L}{3} \\\\\lambda = \frac{2 \times 100}{3} = 67 \ cm$

For fourth mode: n = 4

$\lambda = \frac{2L}{4} \\\\\lambda = \frac{2 \times 100}{4} = 50 \ cm$

Thus, we can conclude that, the wavelengths of the constituent travelling waves CANNOT be 400 cm.

The complete question is below:

A string of length 100 cm is held fixed at both ends and vibrates in a standing wave pattern. The wavelengths of the constituent travelling waves CANNOT be:

A. 400 cm

B. 200 cm

C. 100 cm

D. 67 cm

E. 50 cm

Learn more about wavelengths of travelling waves here: brainly.com/question/19249186

5 0

2 years ago

Which statement about an object in motion is correct? Help

Nostrana [21]

Where are the statements?

7 0

2 years ago

Provide the following information for each of the three types of radiations from naturally radioactive materials. Be sure to inc

scoundrel [369]

Alpha radiation: Particles. Each alpha particle is a little bundle of 2 protons and 2 neutrons ... identical to the nucleus of a Helium atom.

Charge . . . +2 elementary charges

Mass . . . 4 Atomic Mass Units

Relative penetrating power . . . low

The effect an electric field would have on it . . . Since the alpha particle has a positive charge, it's repelled by other positive charges, and attracted toward negative charges.

Beta radiation: Particles. Each beta particle is an electron.

Charge . . . -1 elementary charge

Mass . . . 0.00055 AMU

Relative penetrating power . . . medium

The effect an electric field would have on it . . . repelled by other negative charges, and attracted toward positive charges.

Gamma radiation: electromagnetic wave, verrrrry short wave, high frequency

Charge . . . electromagnetic wave, no charge

Mass . . . electromagnetic wave, no mass

Relative penetrating power . . . high

The effect an electric field would have on it . . . electromagnetic wave, no effect

5 0

3 years ago

A diffraction grating contains 15,000 lines/inch. We pass a laser beam through the grating. The wavelength of the laser is 633 n

MatroZZZ [7]

Answer:

Recall the Diffraction grating formula for constructive interference of a light

y = nDλ/w Eqn 1

Where;

w = width of slit = 1/15000in =6.67x10⁻⁵in = 6.67x10⁻⁵ x 0.0254m = 1.69x10⁻⁶m

D = distance to screen

λ = wavelength of light

n = order number = 1

Given

y1 = ? from 1st order max to the central

D = 2.66 m

λ = 633 x 10-9 m

and n = 1

y₁ = 0.994m

Distance (m) from the central maximum (n = 0) is the first-order maximum (n = 1) = 0.994m

Q b. How far (m) from the central maximum (m = 0) is the second-order maximum (m = 2) observed?

w = width of slit = 1/15000in =6.67x10⁻⁵in = 6.67x10⁻⁵ x 0.0254m = 1.69x10⁻⁶m

D = distance to screen

λ = wavelength of light

n = order number = 1

Given

y1 = ? from 1st order max to the central

D = 2.66 m

λ = 633 x 10⁻⁹ m

and n = 2

y₂ = 0.994m

Distance (m) from the central maximum (n = 0) is the first-order maximum (n = 2) =1.99m

8 0

3 years ago

A city bus travels 6 blocks east and 8 blocks north. Each block is 100 m long. If the bus travels this distance in 15 minutes, w

Eddi Din [679]

Answer:

1.56 m/s

Explanation:

For East direction, the 6 blocks is equivalent to 6*100=600 m

For West direction, 8 blocks is equivalent to 8*100=800 m

Speed is given by s=d/t where s is speed, d is distance covered and t is time taken

Total distance is 600+800=1400m

Time taken is 15 mins, converted to seconds will be 15*60=900 s

Speed, s=1400/900=1.5555555555555 m/s rounded off as 1.56 m/s

4 0

3 years ago

Is air made of matter ?​evidence and reasoning.

Is air made of matter ?evidence and reasoning.