physics review examination

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physics review examination

time :(2 hours only) (13:30 - 15:30)

instructions :

1. this paper consists of 10 questions with total of 100 marks
2. answer all questions
3. all drawings must be by pencil
4. all writings must be by blue or black ink
5. write your name and date in every page of your answer sheet

1. 1. what is :-
      1. density
      2. relative density
      3. mass
      4. weight
   2. calculate the density of stone if has mass, of 30g volume of 100 cm³
2. 1. define "first aid kit"
   2. mention importances of first aid(4 points)
3. 1. states hooke's law
   2. what is elasticity
   3. what is surface tension
   4. what is friction force
4. draw the folllowing and its meaning
   1. toxic
   2. irritant
   3. explosive
   4. flammable
5. explain the importance of studing physics (5 points)
6. 1. what is scientific procedure ?
   2. mention six scientific steps
   3. explosive
   4. flammable
7. 1. what is error?
   2. mention types of error
   3. mention sources of errors
8. 1. what is relative density?
   2. a coin has density of 7g/cm³.calculate its relative density (r.d)
9. 1. what is matter? give examples
   2. mention states of matter and their examples
   3. define osmosis and diffusion
10. 1. what is pressure?
    2. the tip of a needle has cross-sectional area of 1 x 10^-6m².if doctor applies a force of 20 n to a syringe that is connected to the needle,what will be the pressure exerted at the tip of the needle?

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