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kirill115 [55]
4 years ago
12

Radiation emitted from human skin reaches its peak at λ = 940 µm. (a) What is the frequency of this radiation? (b) What type of

electromagnetic waves are these? (c) How much energy (in electron volts) is carried by one quantum of this radiation?

Physics
1 answer:
laiz [17]4 years ago
8 0

Answer:

a) the frequency is 3.191x10^11

b)the radiation is a microwave radiation

c) the energy of one quantum of this radiation is 1.32x10^-3ev

Explanation:

Detailed explanation and calculation is shown in the image below

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james throws a baseball with a horizontal component velocity of 30 m/s east and a vertical component velocity of 40m/s North.How
olga2289 [7]
Force vectors, use Pythagoras to get resultant force: sqrt ((30^2 + (40^2)) = 50m/s
6 0
3 years ago
Which is the United States Space Shuttle-derived heavy expendable launch vehicle being designed by NASA?​
astra-53 [7]

Answer:

Space Launch System (SLS)

Explanation:

Space Launch System (SLS) is the United States Space Shuttle-derived heavy expendable launch vehicle being designed by NASA.

<u>-TheUnknownScientist</u><u> 72</u>

8 0
3 years ago
While eating lunch high up in a skyscraper, two construction workers calculate their gravitational potential
Maurinko [17]

Answer:

The mass of the other worker is 45 kg

Explanation:

The given parameters are;

The gravitational potential energy of one construction worker = The gravitational potential energy of the other construction worker

The mass of the lighter construction worker, m₁ = 90 kg

The height level of the lighter construction worker's location = h₁

The height level of the other construction worker's location = h₂ = 2·h₁

The gravitational potential energy, P.E.,  is given as follows;

P.E. = m·g·h

Where;

m = The mass of the object at height

g = The acceleration due to gravity

h = The height at which is located

Let P.E.₁ represent the gravitational potential energy of one construction worker and let P.E.₂ represent the gravitational potential energy of the other construction worker

We have;

P.E.₁ = P.E.₂

Therefore;

m₁·g·h₁ = m₂·g·h₂

h₂ = 2·h₁

We have;

m₁·g·h₁ = m₂·g·2·h₁

m₁ = 2·m₂

90 kg = 2 × m₂

m₂ = (90 kg)/2 = 45 kg

The mass of the other construction worker is 45 kg.

8 0
3 years ago
When the two surfaces of a thin film are parallel and the light is incident at some angle what fringes are formed? A. Circular B
lord [1]

Answer:

The correct option is;

A. Circular

Explanation:

Some of the light that impinges on the surface are reflected and the rest are transmitted to a different medium

At the surface of the next medium also, some of the light are transmitted while the others are reflected and refracted through the first medium

The speed of light (and hence the wavelength and color) refracted through the thin film is changed as the distance the refracted light travels through the thin film is increased as we move away from the point directly in the front view to some distance as the reflected light path from those distance to the eye is increased due to their inclination giving them a different wavelength which are all equal at a radial distance from the eye hence forming a circular fringes.

8 0
3 years ago
QUESTION 3
andreev551 [17]

Answer:

it is for ego control and for super ego control

here's some more information:

Standards provide people and organizations with a basis for mutual understanding, and are used as tools to facilitate communication, measurement, commerce and manufacturing. Standards are everywhere and play an important role in the economy, by: facilitating business interaction.

6 0
4 years ago
Read 2 more answers
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