He discovered electromagnetic induction
He found a way to cause an electric current, and that discovery was later applied to many devices we use today.
His inventions transformed the home, farm, and factory
. Electricity eliminated manual labor like pumping water, so that rural families no longer spent hours of their day hauling water to livestock or to the house. Automated systems for tasks like milking cows kept farmers from crippling their hands, and the threat of barn fires from knocked over oil lamps during early-morning milking decreased.
He is American. Alex Rodriguez
Momentum is a property of a moving object that makes it hard to stop. It equals the object's mass times its velocity.
Answer:
85.9 V
Explanation:
The voltage across C₃ is 40.0 V, so the voltage between a and d must also be 40.0 V.
Find the equivalent capacitance of C₁, C₂, and C₃:
C₁₂₃ = 1 / (1/C₁ + 1/C₂) + C₃
C₁₂₃ = 1 / (1/8.00 + 1/7.00) + 2.00
C₁₂₃ = 5.73 mF
This is in series with C₄. Capacitors in series have the same charge, so:
Vad C₁₂₃ = Vbd C₄
(40.0) (5.73) = Vbd (5.00)
Vbd = 45.9 V
The total voltage is therefore:
V = Vad + Vbd
V = 40.0 + 45.9
V = 85.9 V
The battery is the set of vertical lines at the bottom, so there's one battery.
The switches are the line between the small circles (they're closed here) there are 2 of them.
The circles with Xs inside are bulbs.
So B is correct.