Chris is making a capacitor with capacitance of 1 microfarad. the voltage across the plates is 9 volts. how many electrons need to be on the negatively charged plate? the charge of an electron is 1.6 × 10–19 coulombs. 5.6 × 10 ^13 electrons 1.4 × 10 ^-24 electrons 9.0 × 10 ^-6 electrons 1.4 × 10 ^-18 electrons

Capacitance is given by

where Q is the total charge on a plate and V is the voltage across the plates.  Here, Q is the charge on the electron times the number of electrons, or

Solving for N, the total number of electrons:

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.

Electoral current force mechanical advantage if the wheel and axle is 2 n and the output force is 20 n