Explanation

• Impulse J=F⋅Δt represents the change in momentum of an object.
• It is directly proportional to the force applied and the time duration of application.
• Impulse measures the effect of force over a time interval.

Last verified on 28-10-2026

Explanation

• The nucleus is the control center of the cell.
• It regulates all vital activities like growth, reproduction, and metabolism.
• It contains genetic material (DNA).
• Ribosomes make proteins, and cytoplasm supports cell structure.

Last verified on 04-05-2026

Explanation

• The Cabinet Mission Plan 1946 was announced on 16 May 1946 from New Delhi.
• It arrived in India on 24 March 1946.
• The mission was sent by the British government to plan transfer of power.
• It was headed by Lord Pethick-Lawrence.
• Its members included Stafford Cripps and A.V. Alexander.

Last verified on 01-05-2026

Explanation

• Carbohydrates are the fastest and main source of energy.
• They are quickly converted into glucose in the body.
• Glucose is used immediately for energy production.
• They provide instant fuel for brain and muscles.

Last verified on 14-05-2026

Explanation

Given:

Increment in number = 20% of the number

Decrement in number = 20% of the new number

Concept used:

Net increase or decrease percent = {(Original number or Final number) - (Final number or original number) ÷ Original number} × 100

Calculation:

Let the original number be 100

When the number is increased by 20%

New Number = 100 + 20% of 100

⇒ 100 + 20

⇒ 120

Now, the number is decreased by 20%

Final number = New number – 20% of new number

⇒ 120 – 20% of 120

⇒ 120 – 24

⇒ 96

∴ Net Decrease in percentage = { (100 – 96) / 100} × 100

⇒ {4/100} × 100

⇒ 4%

∴ The net decrease percentage is 4%.

Last verified on 11-07-2026

Explanation

• Square Feet: 43,560 sq ft

Additional information:

• Square Yards: 4,840 sq yd
• Hectares: ~0.4047 hectares
• Square Meters: ~4,047 sq m

Last verified on 16-10-2026

Explanation

• He said that he was tired.
• Am changes to was because the reporting verb said is in past tense.
• The pronoun I changes to he to agree with the subject.

Last verified on 07-05-2026

Explanation

• Mitochondria are called the powerhouse of the cell.
• Because they produce Adenosine Triphosphate (ATP).
• ATP is the energy currency of the cell.
• ATP provides energy for different cellular activities such as movement, growth, and transport.
• Energy is produced through aerobic cellular respiration using oxygen and الغذائی molecules.
• They are found in the cytoplasm of most eukaryotic cells.
• Richard Altmann first described mitochondria in 1890.

Main Parts of a Cell:

1. Cell membrane → Outer protective layer
2. Nucleus → Controls cell activities
3. Cytoplasm → Jelly-like material between membrane and nucleus

Last verified on 09-05-2026

Explanation

• Ranikot Fort is located in Jamshoro District, Sindh.
• It is also known as The Great Wall of Sindh.
• It is believed to be the world's largest fort.
• It is circumference of approximately 32 KM or 20 Mile.
• The site was nominated in 1993 by the Pakistan National Commission for UNESCO World Heritage status.
• The fort is listed as a historical site under the Antiquities Act, 1975.
• The small Fort within Rani Kot Fort is known as Mari Kot.

Last verified on 17-03-2026

Explanation

• Router: Connects different networks and forwards data packets between them.

Additional information:

• Switch: Connects devices within a local area network (LAN).
• Hub: Broadcasts data to all connected devices.
• Modem: Converts signals to enable internet connectivity.