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lana [24]
3 years ago
14

Calculate the number of vacancies per cubic meter in gold (au) at 900c. the energy for vacancy formation is 0.98 ev/atom. furthe

rmore, the density and atomic weight for au are 18.63 g/cm3 (at 900c) and 196.9 g/mol, respectively.
Physics
1 answer:
Sergeeva-Olga [200]3 years ago
8 0
My mom said its f so i think its q

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Cual de las escalas de temperatura es la mas antigua
IrinaVladis [17]

Answer:

the translation I got for this question is

Which of the temperature scales is the oldest?

Explanation:

and i searched for it and got this=

Fahrenheit scale

6 0
3 years ago
A charge Q acts on a point charge to create an electric field. Its strength, measured a distance of 40 cm away is 100 N/C. What
KIM [24]

Answer:

E_2=80N/C

Explanation:

From the question we are told that:

Initial Distance d_1=40cm=>0.4m

Initial Electric field strength E_1=100N/C

Final Distance d_2=20cm=>0.20m

Generally the equation for Electric field is mathematically given by.

 E=\frac{kq}{d^2}

 q=\frac{100*(0.4)^2}{K}

Substituting q for d=20cm

 E_2=\frac{k}{0.2}*\frac{100*(0.4)^2}{K}

 E_2=80N/C

6 0
3 years ago
At what point in a projectile’s trajectory does it experience a minimum velocity?
ad-work [718]
Minimum velocity occurs at the top of the trajectory, where
the projectile stops rising and starts falling.  For a split second,
it has no vertical speed at all, and its velocity is only the horizontal
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8 0
3 years ago
How long is the image of a metrestick formed by a plane mirror?
Zinaida [17]

A plane mirror doesn't change the apparent size or shape of things.

-- If the meter stick is held parallel to the mirror, or is lying on the mirror,
then its image in the mirror is 1 meter long.

-- If the meter stick is held perpendicular to the mirror, or is standing on
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7 0
3 years ago
What happens when the crests of two waves overlap
Sergio [31]
There are two<span> main types of </span>wave<span> interference: constructive interference and destructive interference. Constructive interference </span>happens<span> when the amplitude of the combined </span>waves<span> is larger than the amplitudes of the single </span>waves<span>. This can occur when the </span>crests of two<span> transverse </span><span>waves overlap.

Hope this helps!!! :D

</span>
4 0
3 years ago
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