Charge is the measure of extra positive or negative particles an object has
Answer: If the light ray hits the boundary at an angle which is not perpendicular to or parallel to the surface, then it will change direction and appear to `bend'
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Answer:
4 sig figs: 20.18
Explanation:
the smallest amount of digits was 4 in the expression
Answer: 1and 4
Explanation: iron is an element not an alloy. An ionic lattice is not bonded covalently.