Explanation

The collision frequency is 2 × 10^9 collisions per second, which can also be expressed as 2 x 10^-9/sec.

Explanation

FCC (Face-Centered Cubic) lattice is the reciprocal lattice of the BCC (Body-Centered Cubic) lattice.

Explanation

Boltzmann's constant (k_B) is a fundamental constant in physics.

The value of Boltzmann's constant is 1.38 × 10^(-23) J/K.

Explanation

 The SI unit of impedance is the ohm (Ω).

Impedance, like resistance, is measured in ohms, and it can be represented as a complex number. 

Explanation

An alternative unit to kg ms⁻¹ is Ns (Newton-second).

This is because 1 N = 1 kg⋅m⋅s⁻², and multiplying by seconds gives Ns = kg⋅m⋅s⁻¹. 

Explanation

A Ship/boat floats based on the Archimedes Principle.

Archimedes principle:

the principle of Archimedes states "When a body is immersed in a liquid, an upward thrust, equal to the weight of the liquid displaced, acts on it."

Thus, when a solid is fully immersed in a liquid, it loses weight which is equal to the weight of the liquid it displaces.

Explanation

Explanation

To find the separation between compression and the adjacent rarefaction of sound waves produced by a tuning fork, we can use the following steps:

Explanation

• The unit of pressure equal to 1 newton per square meter (N/m2) is called a Pascal (Pa).
• It is named after French mathematician and physicist Blaise Pascal.

Explanation

• Gravity is the force that pulls objects towards the Earth.
• Keeping us and everything else on the ground.