Question

Am nevoie de rezolvare și aici ​

Answer 1

Răspuns:

5.

10m/s=36km/h

72km/h=20m/s

1g/cm^3=1kg/m^3

1200 kg/m^3=1.2g/cm^3

6.Pabcd=44cm

G=27N

a)m=?

G=mg

27=m*10

m=27/10

m=2.7

b)p=2.7g/cm

v=?

p*1000=2700kg/m

p=m/v

2700=27/v

2700*v=27

v=27/2700

v=0.01m^3

c)p=1g/cm^3|*1000

p=1kg/m^3

p=m/v

1kg=m/0.01

1kg*0.01=m

1000g*0.01=m

10g=m

G=mg

G=10g*10

G=100g*m/s^2

G=0.1N

7. G=mg

G=4*10

G=40N

F=K*L

40N=k*10m

k=4N/m