Practical Units

The ‘rad’ is the correct unit used to report the measurement of

One Angstrom is equal to:

The unit for measurement system SI unit of mass is __________________ or __________?

My bottle holds $2$ _____ of water.

Find the number that replace "$?$" in the statement below.

$38 \mathrm{L}+\boxed{ ? } \mathrm{L}=40 \mathrm{L}$

Multiply

$\begin{array}{ccc}& \mathrm{l}& \\ & 1& 7\\ \times & & 8\\ & & \end{array}$

Multiply

$\begin{array}{cc}& \mathrm{l}\\ & 8\\ \times & 7\\ & \end{array}$

How many weeks are there in a year?

There were _____ weeks in February in $2011.$

$300 \text{Minutes}=$_____Hours.

The symbol for the units are written in capital letter.

$2$ $\mathrm{days}$ $=$_____$\mathrm{hours}$

$2\frac{1}{2}$ years is equal to _____ months.

Which one is largest unit among the given options?

A star is at a distance of $5$ light years from the earth. Calculate the distance of the star in kilometres. The speed of light is $3\times {10}^8 \mathrm{m} {\mathrm{s}}^{-1}$.

Express $5$ parsec in light years.

$3.0 \mathrm{m} {\mathrm{s}}^{-2}$= _____ $\times {10}^4 \mathrm{km} {\mathrm{h}}^{-2}$(Up to correct significant figures.)

$1 \mathrm{kg} {\mathrm{m}}^2 {\mathrm{s}}^{-2}$ = _____ $\times {10}^7 \mathrm{g} {\mathrm{cm}}^2 {\mathrm{s}}^{-2}$

Note:In stating numerical answers, take care of significant figures.

Every day Himadas practises Yoga from $4:30 \mathrm{am}$ to $6:15 \mathrm{am}$ and  from $4:00 \mathrm{pm}$ to $5:30 \mathrm{pm}$. Find the total time she spends her practises every day ?