One job of the excretory system is a] to control the heartbeat
b]to protect the body against viruses
c]to move the body from place to place
d]to maintain the pH of the blood

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete

change tension

energy stored in the capacitor= 9.72 x 10⁻⁴ j

explanation:

the energy stored in the capacitor is given by

e= 1/2 c v²

e= energy stored

c= capacitance= 1.5 µc= 1.5 x 10⁻⁶f

v= potential difference=36 v

so energy stored= e= 1/2 (1.5 x 10⁻⁶) (36)²

energy stored= 9.72 x 10⁻⁴j

the doppler effect is used by weather forecasters to measure 

moving clouds