Unconventional units of measurements - class-VII

A quintal is a unit of mass in the metric system which is equal to $100$ kilograms.

Since the physical quantity mass has only magnitude but not direction, thus mass is a scalar quantity.

Since,  $1\ Fm={10}^{-15}m$

Atomic mass is the mass of an atom. An atomic mass unit (symbolized AMU or amu) is defined as precisely $\dfrac{1}{12}$ the mass of an atom of carbon-12.

Out of these, meter is the largest.
$1 millimeter = 10^{-3} m$
$1 Angstrom = 10^{-10}m$
$1 Fermi = 10^{-15}m$
Thus Fermi is the smallest.

Parallactic second or parsec is a unit of distance defined as the distance at which one astronomical unit subtends an angle of one arcsecond, which is equal to 3.26 light years.

The prefix used for $\displaystyle { 10 }^{ -9 }$ is nano and prefix used for $10^9$ is Giga

Gram is the unit of mass in the CGS system

Micron, light year and Angstrom are the units of distance whereas mole is the measure of amount of substance in a matter. So, mole is different from others.

Angstrom, Micron and light year are all units of length but radian is the unit of angle subtended.

The parsec is a unit of length used to measure the large distances to astronomical objects outside the Solar System. One parsec is approximately equal to 31 trillion kilometres or about 3.26 light-years. One parsec is the distance to an object whose parallax angle is one arcsecond.

Pound is a unit of mass in the F.P.S. system.

$1\ quintal (qt) = 100\ kg$
$1\ tonne (t) = 1000\ kg$

Foot is the unit of length in the F.P.S. system.

Parsec is a unit of distance used in astronomy. $1\ Parsec $$=3.086\times 10^{13}\ km$

The sun is located 30,000 Light-years away from the galactic centre.

one kg is equal to $2.203$ pounds

One light year is defined as the distance travelled by light in vacuum in one year.

Tonne is a non-metric system defined unit of mass.
$1 \ tonne = 1000 \ kg$

The horizon distance is the maximum distance from which light could have reached an observer since the beginning of the universe, given the age of the universe and the speed of light.

Light year is a unit of length and is defined as the distance travelled by light in one year.

A parsec is defined as approximately 3.086 x 10^16 meters. 3.1 x 10^16 is the standard approximation.

The given statement is true that distance between two atoms in a molecule is measured in the order of Angstrom.

$1$ Light year $=9.461\times 10^{15},m$

Light year is the unit of distance and it is the distance covered by the light in time of one year. So the given statement is false.

A nautical mile is a unit of distance that is approximately one minute of arc measured along any meridian.

Radio Echo, Laser Pulse and Parallax methods are used to measure mong distances.

Kilogram is the metric unit of mass

Parallax displacement or difference in the apparent position of an object vied along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines.

Let W be the weight of the scale acting at the 50 cm mark. Taking moments about the pivot (40 cm): Clockwise moments = 10 gf * (75 - 40) cm = 350 gf cm. Counter-clockwise moments = 25 gf * (40 - 5) cm + W * (50 - 40) cm = 875 + 10W. Equilibrium: 875 + 10W = 350. This implies W is negative, suggesting the scale is balanced differently or the pivot is on the other side. Re-evaluating: 25 gf at 5 cm (35 cm from pivot) and 10 gf at 75 cm (35 cm from pivot). 2535 = 875, 1035 = 350. The weight W must be at 50 cm (10 cm from pivot). 2535 = 1035 + W*10. 875 = 350 + 10W. 525 = 10W. W = 52.5 gf.

The basic metric unit of mass is kilogram

The mass of a body is a measure of its inertia. By definition, inertia is the resistance to a change in the state of motion of a physical object. Mass is, therefore, a measure of inertia.

Kilogram is the basic unit of mass in the metric system