Answer:
The number of free electrons per cubic meter is 
Explanation:
It is given that,
The number of free electrons per cubic meter is, 1.3
Electrical conductivity of metal, 
Density of metal, 
Atomic weight, A = 107.87 g/mol
Let n is the number of free electrons per cubic meter such that,
Where
is the density of silver atom
is the Avogadro number
A is the atomic weight of silver
or
Hence, this is the required solution.
To gather light from a far-off star, a concave mirror with a radius of curvature of 1.0 m is utilized. Most likely 0.25 meters separate the mirror from the star's picture.
A concave mirror is a kind of spherical mirror in which the reflecting surface is the inside radius of curvature of the sphere, or in other words, the reflecting surface appears to be far from the incident light source. Is called concave mirror.
The reciprocal of the curvature is known as the radius of curvature, or R. It is equal to the circumference of the circular arc that, at that location, most closely resembles the curve. The circle's radius that best matches a normal section is known as the radius of curvature for surfaces.
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I can think of two reasons:
1). EVERY transmitted radio signal is transmitted as
a divergent beam. We don't have the technology to
transmit it as a perfectly parallel beam.
That's a good thing, because ...
2). If it were a perfect pencil-thin parallel beam, then
it would be practically impossible to keep it perfectly
aimed at the satellite.
The answer is D because we know its cloning and we want to preserve the animal as fast as we can.
Speed is the answer because it is the rate that something or someone is able to move.
