Select the list which contains only SI basic units.
Liter, meter, second, watt.
Candela, kelvin, meter, second.
Joule, newton, second, watt.
Joule, kelvin, kilogram, watt.
In the real gas equation (P + a/V2 )(V - b) = RT What is the dimension of the constant a?
ML⁻¹ T⁻².
ML5 T⁻².
ML⁻² T⁻².
ML⁻⁵ T⁻².
The equation relating the pressure and volume of a gas with its thermodynamic temperature T is given by pV = KT, where k is a constant. What are the base units of K?
kg m s⁻² K⁻¹.
kg m⁻² s⁻² K⁻¹.
kg m² s⁻² K⁻¹.
No units, because k is a constant.
The magnitude of the force, F, between two masses m1 and m2 separated by a distance r is given by the expression.
F=(Gm1 m2)/r2 The base units for G are
kg⁻¹ ms⁻².
kg⁻¹ m³ s⁻².
kg³ m³ s⁻².
kgm³ s⁻².
A cylindrical tube rolling down a slope of inclination θ moves a distance L in time T. The equation relating these quantities is as in the figure. Where a is the internal radius of the tube and P and Q are constants. Which line gives the correct units for P and Q?
B.
C.
D.
A.
