Explanation

A cyclone refers to a large system of winds rotating around a low-pressure center, covering several kilometers.

A twister (or tornado) is much smaller in scale.

Explanation

To find the pressure, we use the formula:

P = F / A

Where:

- P is the pressure

- F is the force (weight) = 392 N

- A is the area = 0.0001 m²

P = 392 N / 0.0001 m² = 3,920,000 Pa

To convert Pascals (Pa) to Megapascals (MPa):

3,920,000 Pa = 3.92 MPa

Explanation

Orbital electrons have specific, quantized energy levels depending on their orbit.

They cannot have arbitrary energy values — only fixed amounts allowed by quantum rules.

Explanation

Given the conditions:

1. √x requires x ≥ 1 (from x - 1 ≥ 0)

2. Denominator x² - 2x ≠ 0 implies x ≠ 0 and x ≠ 2

The domain is indeed x ≥ 1, excluding x = 2.

So, the domain is (1, 2) ∪ (2, ∞).

Explanation

The phrase “went on” followed by a gerund (-ing form) means to continue doing something.

So, the correct structure is: He went on explaining the benefits.

Explanation

The rate of change of cost with respect to the number of units produced is called Marginal Cost.

It represents the additional cost of producing one more unit.

Explanation

Diagnostic Evaluation identifies the underlying causes of poor performance or learning difficulties.

It helps teachers understand students’ weaknesses to provide targeted support.

Explanation

The ratio of output voltage to input voltage in a transistor circuit is called the voltage gain.

It measures how much the amplifier increases the input signal voltage.

Explanation

The Trapezoidal Rule is a numerical method to approximate the definite integral of a function.

It works by dividing the area under a curve into trapezoids instead of rectangles for better accuracy.

Explanation

Teachers influence students most by their own actions.

Behaving ideally sets a live example for students to follow.