Question

vreau macar primele 3 probleme​

Answer 1

Răspuns:

3.

L= F×d

F=G

G= m×G

G= 350kg×10N/kg

G=3500N

F=3500N

d= h

d= 14

L= 49000J

P=L/t

P=49000J/20s

P= 2450W

4.V=54km/h= 15m/s

Ft = 3×10^4N= 3000,N

P= L/t= Ft×d/ t= Ft ×v

P=3000N×25m/s

P=450000W= 0,45MW

1CP = 736W

P=612,24 CP

5.Ft=60kN =60000N

v= 72km/h=20m/s

p= ,L/t

L=Ft ×d

v= d/t d= v×t

P= Ft ×v×t/t/Ft ×v

P= 60000N×20m/s

P=1200000W

P= 1,2MW