Tính điện trở Rab của các mạch điện sau
a, R1=3 ôm , R2=R3=R4=2 ôm
b, R1=R2=R3=R4=5 ôm

would be false hope this out

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

read more on -

wire in brush may conduct electricity from cell to drill and vice versa electrc shock possible

the answer is 3.1 his answer is wrong mines is right