Explanation

 When two equal circles touch at exactly one point, they are tangent to each other externally.

Each circle has radius = r.

Since they touch externally, the distance between their centers is the sum of their radii.

So:

Distance between centers=r+r=2r

Explanation

The law is Newton's Law of Universal Gravitation.

• It states that gravitational force is directly proportional to the product of two masses.
• It is inversely proportional to the square of the distance between them.
• Formula: F = Gx m_1m_2/r^2
• G is the universal gravitational constant.
• The force acts between any two masses.

Explanation

The physical association of water with ions is referred to as hydration or solvation.

Water molecules surround the ions, forming a structure called a hydration shell,

Due to the attraction between the polar water molecules and the charged ions. 

Explanation

The scale used to measure the acidity or basicity of a solution is called the pH scale.

This scale ranges from 0 to 14, where a pH of 7 is neutral.

Values below 7 indicate an acidic solution,

While values above 7 indicate a basic (or alkaline) solution. 

Explanation

To find the correct option for the code 2098, let's reverse the logic from the given:

LAME → 3425  

L → 3  

A → 4  

M → 2  

E → 5  

COOK → 4006  

C → 4  

O → 0  

O → 0  

K → 6  

TEST → 8598  

T → 8  

E → 5  

S → 9  

T → 8  

Now decode 2098 using above logic:

- 2 → M  

- 0 → O  

- 9 → S  

- 8 → T  

So, 2098 = MOST

Correct answer: B. MOST 

Explanation

One quarter of 250 = 250 ÷ 4 = 62.5  

- One tenth of 62.5 = 62.5 ÷ 10 = 6.25  

- One fifth of 6.25 = 6.25 ÷ 5 = 1.25

Explanation

If a man is moving north and turns right, he will be facing east.

This is because the cardinal directions are arranged in a clockwise manner, and a right turn from north is a 90-degree clockwise movement to east. 

Here's why:

Starting Direction: The man is facing North.

The Turn: He turns right, which is a 90-degree clockwise turn.

New Direction: When you face North and turn 90 degrees to the right, you are looking East. 

Explanation

The given series is: 3/5, 5/7, 7/9, ?

We can observe the pattern:

- Numerators: 3, 5, 7, ... → increasing by 2 → next is 9

- Denominators: 5, 7, 9, ... → increasing by 2 → next is 11

Next term = 9/11

Explanation

 In the context of a ratio written as "a:b," the term 'a' is called the antecedent or the first term of the ratio, while 'b' is the consequent or second term. 

Antecedent: The first term or number in a ratio.

Consequent: The second term or number in a ratio. 

For example, in the ratio 5:2, the antecedent is 5, and the consequent is 2. 

Explanation

 "Attributes" in the context of quality include characteristics, features, traits, properties, aspects, and qualities.

Attributes  صفات

Quality خصوصیت