Mn giup e di a e gap lam ai tot giup e cau 15 thoi a
Giup em 2 cau cuoi duoc khong a?
De trang tri cho quay hang nguoi ta dung n bong den loai ̉̉̉̉̉̉̉̉6v-12w mac thanh mot so day noi tiep roi mac song song voi nhau vao hieu dien the 220v nhan thay neu mac thanh 2 hay 3 day deu nhau thi chi can 1 dien tro phu r chung cho cac day la cac den sang binh thuong. Hoi so bong den la bao nhieu va gia tri dien tro r, mac theo cach nao thi loi hon? Mong moi nguoi giup mik
Can giup 2 bai cuoi a
Minh can giup bai 2 a
giup mk bai mot nhe!cam on nhieu!mk dang can gap
hien nay tren TG co bao nhieu loaj cong nghe nha may dien hat nhan ? cong nghe nao dc sd rog rai nhat? theo e, nha may dien hat
nhan co phaj la co so san xuat dien chiu it' tac dong nhat tu moj truog va khj hau k? vi sao? giup mk vs mk can gap
R1=1
R2=2
R3=3
R4=4
R5=5
R6=6
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Rtd=???????
giup minh vs nha :3
Giup Minh Giai bai 2 voi bai 3 duoc khong