Units and Measu...

The ratio of the dimensions of Planck constant and that of moment of inertia has the dimensions of

If the angular distance between the stars turns out to be approximately 1100 arcseconds, or 0.30 degrees. The moon appears to shift 0.3 degrees when we observe it from two vantage points 2360 km apart, then find the distance of the moon from the surface of the earth.Given angular diameter of moon is 0.5 degrees.

Parallax angles _______ $$0.01/ arcsec$$ are very difficult to measure from Earth.

If a star is $$5.2\times 10^{16}\ m$$ away. What is the parallax angle in degrees?

A star is $$1.45\ parsec$$ light years away. How much parallax would this star show when viewed from two locations of the earth six months apart in its orbit around the sun?

Which of the following is a possible dimensionless quantity?

$$ 5\times 10^7 \mu s$$ is equivalent to ____

The dimension of $$\dfrac{h}{mv}$$ is: ($$h$$$$=$$ planks constant, $$m$$= mass, $$v$$=velocity)

The dimensional formula of coefficient of viscosity is

A physical quantity $$Q$$ is found to depend on observables $$x, y$$ and $$z$$, obeying relation $$Q=\dfrac{x^{2/5}z^{3}}{y}$$. The percentage error in the measurements of $$x, y$$ and $$z$$ are $$1\%$$, $$2\%$$ and $$4\%$$ respectively. What is percentage error in the quantity $$Q$$ will be :