Its the symbol it usually has the first letter of the elements name.<span />
Answer:
50% of unpolarised light passes through the first filter because, on average, 50% of the waves are aligned with the fiter's axis. Intensity is reduced by a factor 0.5.
The second filter then reduces the intensity by a factor cos²(θ)
Explanation:
b. seismic waves need a medium for propagation.
The best and most correct answer among the choices provided by the question is the first choice "sodium nitrate"
<span>Sodium nitrate is the chemical compound with the formula NaNO₃. This alkali metal nitrate salt is also known as Chile saltpeter or Peru saltpeter to distinguish it from ordinary saltpeter, potassium nitrate.</span>
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Answer:
An organelle is a structure in a cell that has specific jobs to do. Organelles are held in the cytoplasm