Explanation

The space between two points in space is called the distance between them.

Distance is a scalar quantity representing the length of the line segment connecting two points,

And it can be measured directly or calculated using mathematical formulas like the Euclidean distance formula. 

Explanation

A reversible reaction can never proceed to completion.

This is because a reversible reaction is an equilibrium reaction in which both forward and reverse reactions occur at the same rate.

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ND17-1-2023

Explanation

At equilibrium, the rate of forward reaction is equal to the rate of backward reaction.

This is as per the definition of the equilibrium.

When a reversible reaction is carried out in a closed vessel, a stage is reached when the forward and the backward reactions proceed with the same speed.

Explanation

Explanation

To express 0.0064 in scientific notation:

Move the decimal point 4 places to the right → 6.4 × 10⁻⁴.

Explanation

Caffeine occurs naturally in the tea plant,

Camellia sinensis, so all brewed tea contains some caffeine. 

Tea leaves contain 3.5% caffeine,

while

Coffee beans have 1.1–2.2%.

Explanation

The process of filling the pump casing and suction pipe with liquid to remove air before starting the pump is called priming.

This is a critical step, especially for centrifugal pumps, because they cannot pump air effectively.

Explanation

The young of a lion is called a cub.

A lion cub stays with its mother for about two years, learning how to hunt from her as it grows into an adult lion. 

The term "cub" is also used for the young of other big cats, such as tigers and bears. 

Explanation

The SI unit for electromotive force (EMF) is the Volt (symbol: V).

One volt represents one joule of energy provided per coulomb of electric charge. 

Explanation

A wave that results from simple harmonic motion (SHM) is called a sine wave, or a sinusoidal wave.

This is because the pattern of displacement, velocity, and acceleration in SHM is represented by a sine function over time.