Explanation

Heat is a form of energy, specifically thermal energy, which is transferred from one body to another due to a temperature difference.

It is a type of kinetic energy, where the particles of a substance vibrate or move rapidly, generating heat.

Explanation

The total resistance (R) in the series circuit is:

R = 5 + 10 + 10

= 25 Ω

The current (I) is given by Ohm's law:

I = V/R

= 50V / 25Ω

= 2A

Explanation

A comet grows a tail when it approaches the Sun due to the heat causing the ice to vaporize, releasing gas and dust.

This process forms a glowing coma and tail, which always points away from the Sun due to solar wind.

Explanation

A lever consists of three main parts: Load (the object to be moved), Effort (the force applied), and Fulcrum (the pivot point).

These parts work together to make lifting or moving objects easier.

Explanation

The cordless power tools were developed during the Apollo missions to collect and study moon soil samples.

These tools helped astronauts drill into the lunar surface and bring back samples without power cords, making them more practical in space.

Explanation

In the last 100 years, the Earth's average temperature has risen by about 1°C due to human activities.

This increase is mainly linked to greenhouse gas emissions.

Explanation

Explanation

Explanation

Explanation

The odd one out is 'Diameter' because it is a geometric concept.

While the other options (Lactometer, Barometer, Thermometer) are instruments used to measure specific physical properties.