Explanation

72 beats per minute is a good heart rate.

Complete answer:

The resting person usually has a pulse rate between 70 (beats per minute) and 80 (beats per minute).

Your risk of dying from a heart attack is lower if your heart rate is below 80 beats per minute.

A normal resting heart rate ranges from 60 to 100 beats per minute.

Explanation

The core principle behind a hydrogen bomb is the fusion of light atomic nuclei.

Specifically isotopes of hydrogen (deuterium and tritium), under extremely high temperatures and pressures. 

Explanation

20 men can construct a building in 40 days.

Total work = 20 men × 40 days = 800 man-days.

Time = Total work / Number of men = 800 man-days / 10 men = 80 days.

Explanation

Atomic nuclei consist of electrically positive protons and electrically neutral neutrons.

The nucleus makes up much less than. 01% of the volume of the atom,

but typically contains more than 99.9% of the mass of the atom.

Explanation

 After independence, in 1947, the Pakhtoonistan stunt was raised in Khyber P.K. by Khan Abdul

Explanation

To induce fission in Uranium-238 (²³⁸U), you need Fast neutrons. 

Fast Neutrons:

Fast neutrons have sufficient kinetic energy to overcome the repulsive forces within the nucleus and initiate fission

Explanation

 The energy required to break down a nucleus into its constituent protons and neutrons is called nuclear binding energy. 

Explanation

At the time of Pakistan's independence, the Chief of the Pakistan Air Force (PAF) was Air Vice Marshal (later Air Marshal) M. Asghar Khan. 

Explanation

 Rear Admiral James Wilfred Jefford was appointed the first Commander of the Royal Pakistan Navy.

He served as the Commander-in-Chief of the Royal Pakistan Navy until 1953. 

He was a Royal Navy officer. 

Explanation

Step 1: Define Variables

Let the number of pages Nasir reads on the second day be x.

We are given that on the first day, he read 60 pages, which was 20% more than what he read on the second day.

So, we can set up the equation:

60=x+10020​×x $$60 = x + 0.2x$$60=1.2x
x=60/1.2​=50

Step 2: Find Total Pages in the Book

It is also given that on the second day, he read $frac{1}{6}$ of the book, meaning:

50=1/6​ ×Total Pages
$$\text{Total Pages}=50\times 6=300$$

Final Answer:

The total number of pages in the book is 300