Explanation

A light year is the distance light travels in one year.  

   - Since it's a measure of length, its dimension is [L].  

Explanation

A pendulum's swing speed is inversely proportional to the strength of gravity.

Since Earth's gravity is weakest at the equator due to its centrifugal force caused by rotation, the pendulum will swing most slowly there. 

Explanation

Cubic meter (Cubic meter is a unit of volume, not distance.)

Explanation

 The equation used for evaluating time in quantum fields is the Schrodinger equation. 

Explanation

It is the total heat content of a system when the pressure is constant.

It helps us understand energy changes in chemical reactions.

Explanation

Frictional force is a non-conservative force.

Unlike conservative forces (such as elastic spring force, gravitational force, and electric force), friction dissipates energy as heat and does not store it.

It means the work done by friction depends on the path taken.

Explanation

The nucleus, which consists of protons and neutrons.

It is incredibly dense and occupies a very small volume compared to the extra-nuclear part (electrons).

However, the nucleus contains most of the atom's mass due to the significant mass of protons and neutrons.

Explanation

Evaporation occurs when molecules on a liquid's surface gain enough energy to escape into the air, and this can happen at any temperature, not just at boiling point.

It's a slow process at lower temperatures, but faster at higher temperatures.

Explanation

The potential energy (PE) of an object is calculated as:

PE = mass x gravity x height

= 1 kg x 10 m/s^2 x 1 m

= 10 Joule

So, the energy possessed by the body is 10 Joule.

Explanation

Distance is a scalar quantity because it only has magnitude (amount of length) but no direction.

Distance is a measure of how far apart two points are, but it doesn't have a direction.