9. Definition
Nature:study of nature into two branches
1- Biological science which deal with living
things
2-physical science which concern with non-
living things
Physics: Physics deals with the study of
Matter and energy and the relationship
between them طبیعیات
مادے
اور
توانائی
کے
مطالعہ
اور
ان
کے
درمیان
تعلق
سے
متعلق
ہے
10. For example
let’s say you want to find the
power of a car that is moving at a speed
of 10 m/s. The force of the car is 100 N.
The distance the car has traveled is 10
m. The time it took to travel that distance
is 1 second. Therefore, the power of the
car is 1000 watts or 1 kilowatt.
The formula for power can be written as:
Power = (force x distance) / time
The formula for power can also be
written as:
Power = work / time
11. International system of Units
To describe the physical quantities this
system use.Three kind of units
Base Unit: There are seven Base
unit Namely:
length,mass,time,temperature,electric
current, luminous intensity and
amount of a substance
Supplementary Unit:Plane Angle
(radian),Solid angle(Sterandian)
14. Effect of hypoxia on body
Change in CNS particullarily in higher
center.
Fattigue,drowsiness,apathy,inattentiveness,
delayed reation time
Can cause death of cells through out the
body.
Depressed mental activity sometime results
in coma
Reduced work capacity of muscles
Death usually results from respiratory
failure (brainsteem hypoxia).
15.
16. Atmospheric hypoxia
An insufficent oxygen supply reaches
the blood.
Due to decreased atmospheric PO2 at
high altitude
Reduced alveloar ventilation
Impaired alveolar gas exchange
17.
18. IN any measurements,the accurately
known digits the first doubtful digit are
called significant figures کسی
بھی
پیمائش
میں
،
درست
طور
پر
معلوم
ہندسے
اور
پہال
مشکوک
ہندسہ
اہم
اعداد
کہالتا
ہے۔
