Verified Nabteb Physics Obj And Theory Answers 2017

           

VERIFIED!

    CERTIFIED NABTEB PHY OBJ 2017
1-10DABDCADCCC
11-20DACDBCDDAD
21-30DBCBAACCCC
31-40DBAADBADCB
41-50ACCBBAAABC


THEORY

          Nabteb phy theory answers

1a)
 S/N| Quantities| Formula| unit| dimension
1| force| f=ma| newton(N)| kgms^-2 or MLT^-2
2| momentum(p)| p=mv| kgms^-1 or MLT^-1
3| density| e=m/v| kgm^-3 or ML^-3

(1bi) Relative density of a substance: This is the density of a substance to the density of water i.e.
Relative density = Density of substance / Density of water

1bii) Title of experiment: Determination of density of extracted stone from a rock

Apparatus - Eureka can, thread, stone, measuring cylinder, wooden stand

Reagent - Water

Procedure:-
-A hard stone is extracted from a rock
-weigh the obtained stone
-thigh a thread round stone
-the mass of a stone is obtained using a lever balance
-the stone with thread is place in water is displaced and the volume of the displaced water is equivalent to the volume of the solid guage by measuring cylinder placed beside the eureka can the volume of water dropped into it
-has  the mass and volume has been obtained the density can be determined as :-

Density:-mass of irregular object(stone)/volume of water displaced