A 2.0ìF capacitor, a 13ìF capacitor, and a 20ìF capacitor are connected in parallel. What is their equivalent capacitance? Could you explain how to do?

Answer 1

A skier of mass 44.4 kg comes down a slope
of constant angle 26 ◦ with the horizontal.
What force normal to the slope is exerted by
the skis (neglect friction)? The acceleration
of gravity is 9.8 m/s
2
.
Answer in units of N

Answer 2

If two capacitors are in parallel, they hold more charge for a given voltage.
We know that
C = Q/V
here
C1 = Q1/V
C2 = C2/V
C1 + C2 = (Q1+Q2)/V
so
final C = C1 + C2
In other words, if in parallel, add capacitances because you add charges per unit voltage

Answer 3

any acceleration is down the slope, perpendicular to the force we are interested in.
That normal force is the component of weight normal to the hill surface
which is
m g cos 25