Units and Measu...

Calculate area enclosed by a circle of diameter $$1.06\ m$$ to correct number of significant figures.

The dimension of permittivity ($${ \varepsilon  }_{ 0 }$$) are ______. Take $$Q$$ as the dimension of charge.

The order of magnitude of $$379$$ is

Which of the following is dimensionless?

If $$y$$ represents the pressure and $$x$$ represents the position then dimensional expression of $$\int { \dfrac { dx }{ \sqrt { p^{ 2 }- y^2}  }  } $$

If the speed of light (c), acceleration due to gravity (g) and pressure (p) are taken as fundamental units, the dimensions of gravitational constant (G) are:

The number of significant figures in $$0.00210$$ is

Subtract $$2.5 \times {10}^{4}$$ from $$3.9 \times {10}^{5}$$ and give the answer to correct number of significant figures.

The order of magnitude of 0.00701 is:

The amplitude of a damped oscillator of mass $$'m'$$ varies with the time  't' as $$A=A_0e^{-at/m}$$. The dimension of $$'a'$$ are: