Explanation

غزوہ تبوک میں مالی مدد کی ضرورت تھی، اس موقع پر مسلمان خواتین نے اپنے زیور اور مال و دولت اللہ کی راہ میں پیش کیے۔

Explanation

Radiation: Gas heaters emit infrared radiation that heats up objects and people directly.

Convection: The heated air rises and circulates around the room, warming it through convection.

Explanation

According to Coulomb's Law, the force between two charges decreases as the square of the distance between them increases.

Formula: F ∝ 1/r², where r is the distance between the charges.

Explanation

To find the length of the chord:

Let's denote the chord's length as 2x (since x would be half the chord's length due to symmetry).

The distance from the center to the chord is 10cm, forming a right triangle with hypotenuse 30cm (radius) and one leg 10cm (distance to chord).

The other leg (x) can be found using the Pythagorean theorem:

x² + 10² = 30²

x² + 100 = 900

x² = 800

x = √800 = √(400*2) = 20√2

The full chord's length is 2x = 2 * 20√2 = 40√2

Explanation

ہنا بند ایک فارسی/اردو ترکیب ہے جس کا مطلب ہوتا ہے قید کیا ہوا یا قید میں۔

یہ لفظ عام طور پر کسی کے بند یا محدود ہونے کے مفہوم میں استعمال ہوتا ہے۔

Explanation

Given the cone's height (h) = 7m and radius (r) = 6m, let's calculate the volume (V) using the formula:

V = (1/3)πr²h

= (1/3) * (22/7) * 6² * 7

= (1/3) * 22 * 36

= 22 * 12

= 264m³

Explanation

Bacteria and fungi are decomposers that break down dead plants and animals.

They recycle nutrients back into the ecosystem, maintaining ecological balance.

Explanation

An object floats if its density is less than the liquid's density.

An object sinks if its density is greater than the liquid's density.

Explanation

Upthrust (or buoyant force) happens only when a body is physically in contact with a liquid.

Electrostatic magnetic force between two magnets, and gravitational forces act at a distance without contact.

Explanation

Benjamin Bloom developed the Bloom's Taxonomy, categorizing learning objectives from simple to complex, progressing from factual knowledge to higher-level conceptual understanding.

His taxonomy is widely used to structure educational goals and assess cognitive learning.