Explanation

Electromagnetic waves are transverse waves, meaning the oscillations of electric and magnetic fields are perpendicular to the direction of wave propagation.

Unlike mechanical waves, they do not need a medium and can travel through a vacuum.

Explanation

The phrase "What she had written" follows the correct word order for a noun clause.

It functions as the object of the preposition "by" in the sentence.

Explanation

Intonation refers to the variation in pitch while speaking, which expresses emotion or emphasis.

It plays a key role in conveying questions, statements, and emotions in speech.

Explanation

Formula: Perimeter = 2 × (Length + Width)

⇒ 66 = 2 × (15 + Width)

Solving: 33 = 15 + Width ⇒ Width = 18 meters.

Explanation

Given the direct variation between x² and y, we can write:

x² = ky

where k is the constant of variation.

Step 1: Find the constant of variation k

When x = 7 and y = 49:

7² = k * 49

49 = k * 49

k = 1

Step 2: Write the equation of variation

x² = y

Step 3: Find x when y = 100

x² = 100

x = ±√100

x = ±10

The answer is: 10, -10.

Explanation

An inflectional ending is added to the end of a word to modify its tense, number, or form (e.g., -s, -ed, -ing).

It helps show grammatical relationships without changing the core meaning of the word.

Explanation

Coagulation is the process where a liquid changes into a semisolid or gel-like state.

It often occurs in biological and chemical systems, such as blood clotting or curd formation.

Explanation

Words like "first," "next," "then" help show the order of events or steps in writing.

These are called sequence markers because they organize ideas sequentially.

Explanation

An anagram is a word formed by rearranging all the letters of another word.

"Tenils" is not a valid English word, so it is not an anagram of "silent."

Explanation

To find the maximum length of each piece, we need the HCF (Highest Common Factor) of 42, 54, and 64.

HCF of 42, 54, and 64 is 2 meters — the greatest length that divides all three without a remainder.