A) Two of the SI base quantities are mass and time. State three other SI base quantities.
B) A sphere of radius r is moving at speed v through air of density p. The resistive force F acting on the sphere is given by the expression
F= Br^2 pv^k
Where B and k are constants without units
I) state the SI base units of F, p and v
II) Use base units to determine the value of k
1
Expert's answer
2018-04-18T08:08:07-0400
A) Three other SI base quantities are time, electric current and thermodynamic themperature. B) I) F=kg*m/s2, ρ=kg/m3, v=m/s. II) (kg*m)/s^2 =m^2*kg/m^3 *(m/s)^k,(kg*m)/s^2 =kg*m^(k-1)/s^k . It is obvious that k=2.
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