People in the United States know that water boils at 212F. In Europe, people know that water boils at 100 C. Is the water in the
2 answers:
You might be interested in
To solve this problem we must use the trigonometric relations, in this case as we have the ramp and the height the concentric trigonometric property to the will allow us to find the angle.
The sine of angle A, is defined as
Therefore the angle of elevation is 8.9°
Answer:
0.5
Explanation:
The energy of a charged capacitor is given by where
is the charge on it and
is its capacitance. The capacitance is defined, geometrically, as
where is a constant that is determined by the material between the plates,
is the area of the plates and
is the distance between them. It is then that the capacitance is linearly inversely proportional to the separation distance; as the distance increases, the capacitance reduces.
Because it is linear, when the separation distance is doubled, other factors remaining constant, the capacitance is halved. Because the capacitance is halved, the energy is halved.
Let's see the mathematics.
Initial capacitance, at initial separation,
If separation is doubled, separation becomes . Then the capacitance becomes
Initial energy,
Final energy,
Hence,