It's the angle made by the incident ray when it's perpendicular to the surface. (Perpendicular lines are the lines that form a graph or like a 90-degree angle)
The answer is D) Velocity
Answer:

<em>The potential environmental impacts associated with solar power—land use and habitat loss, water use, and the use of hazardous materials in manufacturing—can vary greatly depending on the technology, which includes two broad categories: photovoltaic (PV) solar cells or concentrating solar thermal plants (CSP).</em>
Explanation:
I just answer the second question
The correct answer among the choices given is the last option. Cora wrapping the copper wire with a thick plastic coating keeps a current from passing out a wire. The plastic wire here serves as an insulator. An insulator is a material that prevents electricity or current to flow out the circuit. In order to lessen the loss of energy.
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Answer:
383.6 nJ
Explanation:
The energy stored in a capacitor is given by the formula:

where
C is the capacitance
V is the voltage applied
In this problem, we have
C = 14.8 nF is the capacitance of the capacitor
V = 7.2 V is the voltage
Substituting into the equation, we find:
