Answer:
Wavelength of the x rays is 
Explanation:
It is given that,
The inter planer spacing between the crystal planes, 
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 :
n = 1
So, the wavelength of the x rays is 
. Hence, this is the required solution.
Answer: The weight of the astronaut on earth is greater than his weight on the moon.
Explanation:
The reason I got this answer is because the astronaut will have the same mass on the moon as he does on earth. Also the weight of a person or object is determined by gravity. So since the moons gravity isn’t as strong as earths gravity the astronauts are lighter in terms of weight, and this is how they slightly float.
They grew up to that sound. They love the sound of that same traffic sound.
A.a uniform mixture that can’t be separated
"substance" seems vague here
<span>Mirage is due to (A). unequal heating of different parts of the atmosphere,
because that produces unequal density of different parts of the atmosphere,
which bends the light.
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