Explanation

• Whales have a unique audible range that is adapted to their underwater environment.
• They can hear sounds at very low frequencies, often below 20 Hz, and up to 31 kHz.

Explanation

• The Earth rotates on its axis, completing one full rotation in 24 hours.
• This is the equivalent of 1,440 minutes or 86,400 seconds.
• This rotation is what gives us day and night, as different parts of the planet face towards or away from the Sun.

Explanation

Explanation

• The electric field strength related to Hall voltage is given by VH/d, where V is the Hall voltage and d is the width of the conductor.
• The Hall effect is the production of a potential difference (the Hall voltage) across an electrical conductor that is transverse to an electric current in the conductor and to an applied magnetic field perpendicular to the current.

Explanation

Due to heating, when a free electron is produced than simultaneously a hole is also produced.

Explanation

The postulate that "Collisions of gas molecules are elastic" is not a part of the Kinetic Molecular Theory of Gases.

Explanation

When light is refracted, its frequency does not change; this means the frequency remains constant even as the light enters a different medium and bends

Explanation

Explanation

Momentum (p) is defined as mass (m) multiplied by velocity (v), so p = mv.

If we square p and divide by m, we get: p^2/m = (mv)^2/m = mv^2.

This is the formula for kinetic energy.

Therefore, p^2/m has the same unit as energy. 

Explanation

• Sound waves first enter the ear through the Ear Canal, also known as the external auditory meatus.
• From there, they travel to the eardrum, then to the cochlea, and finally to the auditory nerve.