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Ludmilka [50]
3 years ago
12

Helppppppppppppppppp​

Physics
2 answers:
svlad2 [7]3 years ago
6 0
Burning of paper is the answer
nasty-shy [4]3 years ago
6 0

Answer:

Burning of paper

Explanation:

Because new substance is formed

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Monochromatic x rays are incident on a crystal for which the spacing of the atomic planes is 0.440 nm . The first-order maximum
Sedaia [141]

Answer:

Wavelength of the x rays is \lambda=2.79\times 10^{-10}\ m

Explanation:

It is given that,

The inter planer spacing between the crystal planes, d=0.44\ nm=0.44\times 10^{-9}\ m

The first-order maximum in the Bragg reflection occurs when the incident and reflected x rays make an angle of 39.4 degrees with the crystal planes. According to the Bragg's condition, the first-order maximum is given by :

d\ sin\theta=n\lambda

n = 1

d\ sin\theta=\lambda

0.44\times 10^{-9}\times \ sin(39.4)=\lambda

\lambda=2.79\times 10^{-10}\ m

So, the wavelength of the x rays is 2.79\times 10^{-10}\ m. Hence, this is the required solution.

8 0
4 years ago
Q 28.7: A strip 1.2 mm wide is moving at a speed of 25 cm/s through a uniform magnetic field of 5.6 T. What is the maximum Hall
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Answer:the  maximum Hall voltage across the strip= 0.00168 V.

Explanation:

The Hall Voltage is calculated using

Vh= B x v x  w

Where

B is the magnitude of the magnetic field, 5.6 T

v is the speed/  velocity of the strip, = 25 cm/s  to m/s becomes 25/100=0.25m/s

and w is the width of the strip=  1.2 mm to meters becomes 1.2 mm /1000= 0.0012m

 Solving

Vh= 5.6T x 0.25m/s x 0.0012m

=0.00168T.m²/s

=0.00168Wb/s

=0.00168V

Therefore, the  maximum Hall voltage across the strip=0.00168V

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