Answer:C, Atoms of iron are different from atoms of nickel.
Explanation:All the atoms that make up each type of element are alike, and they are different from the atoms that make up every other type of element. So the element iron is different from the element nickel because the atoms that make up the iron are different from the atoms that make up the nickel.
<span>As long as both mirrors are set at 45% and the same size then you see the same as is reflected in the upper mirror </span>
<span>Put a lens in the middle of the tube </span>
<span>? </span>
<span>We use mirrors when we drive cars ect </span>
<span>Normally they are set across from a concealed entrance or one that is hard to see both ways like the inside of a hairpin bend. Sometimes only to help in one direction. </span>
<span>Sonar which is sound waves that are sent out at a set rate then reflected by objects. The longer the gap between the two the further away it is, They still use periscopes to target boats though. </span>
<span>The periscope can only reflect what is outside so if you could see it because there is enough light then Yes. If you could not see it because it is dark then No unless you get into Info-Red light or Image Intensifying systems as well </span>
(1) The position around equilibrium of an object in simple harmonic motion is described by

where
A is the amplitude of the motion

is the angular frequency.
The velocity is the derivative of the position:

where

is the maximum velocity of the object.
The acceleration is the derivative of the velocity:

where

is the maximum acceleration of the object.
We know from the problem both maximum velocity and maximum acceleration:


From the first equation, we get

(1)
and if we substitute this into the second equation, we find the angular fequency

while the amplitude is (using (1)):

(b) We found in the previous step that the angular frequency of the motion is

But the angular frequency is related to the period by

and so, the period is
Primary clarifiers removing biological nutrients is not true. Primary clarifiers
involves the use of processes such as sedimentation in order to remove
particles floating or other inorganic solids from the waste water.
Biological nutrients such as nitrogen and phosphorus are found in waste
water and removal of these important nutrients for other uses is a part of
waste water management.
The secondary clarifiers are the ones responsible for the removal of
biological nutrients in the waste water through biofiltration etc.
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An educated guess is a “hypothesis”