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Kruka [31]
3 years ago
9

A glass tube is inserted into a flowing stream of water with one opening directed upstream and the other end vertical. If the wa

ter velocity is 3 m/s, how high will the water rise in the vertical leg relative to the level of the water surface of the stream?
Engineering
1 answer:
Furkat [3]3 years ago
5 0

Answer:

h=0.46m

Explanation:

From the question we are told that:

Velocity of water V=3m/s

Height=?

Generally, the equation for Water Velocity is mathematically given by

V=\sqrt{2gh}

Therefore Height h is given as

h=\frac{v}{2g}

h=\frac{3^2}{2*9.81}

h=0.46m

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The human eye, as well as the light-sensitive chemicals on color photographic film, respond differently to light sources with di
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Answer:

a) at T = 5800 k  

  band emission = 0.2261

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Explanation:

To Calculate the band emission fractions we will apply the Wien's displacement Law

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at T = 5800 k  

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at T = 2900 k

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attached below is a detailed solution to the problem

<u>b)calculate wavelength corresponding to the maximum spectral intensity</u>

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3 0
3 years ago
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Explanation:

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2 years ago
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Answer:

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In order to investigate the relation between surface treatment and optical properties, stainless steels (AISI 304 and 430) which were submitted to different chemical and mechanical surface treatments, were used. To increase the spectral selectivity, these surfaces were treated in air and in vacuum at different temperatures and times. The optical properties of these films were investigated. Visual and infrared spectral absorptances were measured at room temperature. The thermal hemispherical emittance and absorptance were obtained by a calorimetric method at 200°C. It was noticed that these chemically and mechanically treated stainless steel surfaces have good spectral properties without further oxidations. This is very important for high temperature uses. The best values are found for samples 7 and 8 under vacuum and air. These two samples with mechanically ground surfaces retained their selectivity and specularity after several hours oxidation. One can conclude that the surface ground treatment confers good selectivity on the steel surfaces for use in concentrating solar collectors with a working temperature of 500°C.

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Explanation:

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