Answer:
gravitational potential energy
In a parallel circuit, the equivalent resistance is the reciprocal of (the sum of the individual reciprocals).
1/R = 1/10 + 1/21 + 1/13
1/R = 0.225 mhos
R = 4.45 ohms
I = V / R
The total current out of the battery is
I = (9v)/(4.45ohms)
I = 2.02 Amperes
As the total current leaves the battery, it splits into 3 paths, and each resistor gets part of it. The 10ohm resistor gets the most current; the 21ohm resistor gets the least current. After flowing through the resistors, the 3 currents join and add up to 2.02 Amperes again, and the same current returns to the battery.
Each resistor has the same 9v of EMF across it.
The correct answer is C. luster refers to how much light is in an object or how much reflects off. hope this helps, have an amazing day :)
Answer:
(a). The ball's centripetal acceleration is 
(b). The magnitude of the net force is 232.9 N.
Explanation:
Given that,
Mass of baseball = 144 g
Speed = 81 mph = 36.2 m/s
Distance = 81 cm
(a). We need top calculate the ball's centripetal acceleration just before it is released
Using formula of centripetal acceleration

Where, v = speed
r = radius
Put the value into the formula



(b). We need to calculate the magnitude of the net force that is acting on the ball just before it is released
Using formula of force

Put the value into the formula


Hence, (a). The ball's centripetal acceleration is 
(b). The magnitude of the net force is 232.9 N.