Explanation

In p-type semiconductors, a trivalent impurity is added, typically Boron.

Explanation

Tidal energy is primarily due to the gravitational pull of the Moon and, to a lesser extent, the Sun on Earth's oceans.

Explanation

22 → 25 → 27 → 30

Differences between terms:

- 25 - 22 = 3

- 27 - 25 = 2

- 30 - 27 = 3

The pattern alternates: +3, +2, +3, +2...

So, the next difference should be +2.

30 + 2 = 32

Explanation

We have pairs of letters:

• AA (A repeated twice) — Z

• BB (B repeated twice) — Y

• CC (C repeated twice) — X

• D _

It seems like:

• First letter is moving forward: A → B → C → D

• Second letter is moving backward from Z: Z → Y → X → W

So after D, we should have W.

Explanation

cot(x) is defined as cos(x)/sin(x) and can take all real values except where sin(x) = 0.

Explanation

The derivative of tan(x) is sec²(x).

This can be found by rewriting tan(x) as sin(x)/cos(x) and applying the quotient rule,

Which results in sec²(x) after using the Pythagorean identity 1 + tan²(x) = sec²(x). 

Explanation

Lenz's law is a consequence of the law of conservation of energy.

The law of conservation of energy states that energy can neither be created nor be destroyed.

AGM 25-12-2022

Explanation

In electrical systems, power (P) is given by the formula:  

P = V × I,  

where V is voltage and I is current.

Explanation

Both torque and energy have the unit Newton-meter (N·m) in SI units.

They represent different physical quantities.

Explanation

The SI unit of stress is the Pascal (Pa), which is equivalent to Newtons per square meter (N/m²).

Therefore, the SI unit of stress is the same as that of pressure.