Explanation

A reaction in which heat is absorbed is called an endothermic reaction.

These reactions lower the temperature of their surrounding area, thereby creating a cooling effect.

Explanation

The Battle of Uhud was fought on Saturday, 23 March 625 AD, in the valley north of Mount Uhud.

Abu Sufyan commander of the infidels in  Uhad Ghazwa

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It was fought in 3 Hijri 

Ohad is the name of a mountain

1000 Muslims participated in the battle of Uhad

3000 Infidels participated in the battle of Uhad Infidel means کفار

In the battle of Uhad Prophet Muhammad (PBUH) selected 50Skillful archers to stay on the mountain

Explanation

When a car moves at constant velocity, it means there is no acceleration.

According to Newton’s First Law, if there’s no acceleration, the net force acting on the object is zero.

Explanation

The cross product of two vectors A × B ≠ B × A; in fact, A × B = –(B × A), so it is not commutative.

However, it does obey the distributive law over addition, and associative law applies with scalar multiplication but not for three vector cross products.

Explanation

Explanation

This is a conditional sentence (Type 2), which uses "were" with "I" in hypothetical situations.

Correct sentence: "If I were you, I would have told him the truth."

Explanation

Direct speech: He said to me, "Why are you sad today?"

Indirect speech rules:

Said to → changes to asked (since it's a question).

Are → was (present to past).

Today → that day (change in time expression).

He asked me why I was so sad that day.

Explanation

Given y = 3:

Step 1: Calculate y³.

y³ = 3³ = 27

Step 2: Calculate y³ - y.

y³ - y = 27 - 3 = 24

Step 3: Calculate y³(y³ - y).

y³(y³ - y) = 27 × 24

= 648

Explanation

Bacillus refers to rod-shaped bacteria.

Coccus are spherical.

Spirillum are spiral-shaped.

Explanation

The correct phrase is "looks forward to", which means to anticipate something with pleasure.

Example: "She looks forward to meeting you."