In scientific notation", that number would be written as
6.81 x 10⁻⁴ .
Ethanol and biodoesel are also <u>cleaner-burning</u> fuels than pure gasoline and diesel fuel.
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Answer:
C. It helps scientists detect dark matter.
Explanation:
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Explanation:
The position vector r:

The velocity vector v:

The acceleration vector a:



Explanation:
Given that,
Electrostatic force, 
Distance, 
(a)
, q is the charge on the ion


(b) Let n is the number of electrons are missing from each ion. It can be calculated as :


n = 2
Hence, this is the required solution.