what is the answer of this plss tell me
Answers
Hlo mate, here is your answer:
2. a) Initial level of water = 20 ml
Level of water increases by = 5 ml
Final level of water = (20 + 5) ml = 25 ml
b) Water level rises due to immersion of stone into it.
Therefore, level of rise in water = volume of stone = 5 ml
c) Mass of stone = 6 g
Volume of stone = 5 ml = 5 cc
Therefore, density of the stone = (6/5) g/cc = 1.2 g/cc.
d) Density in C.G.S. system = 1.2 g/cc
Density in S.I. system = (1.2 * 1000) kg/m^3 = 1200 kg/m^3
3. a) Acceleration is the rate of change in velocity. In other words, it is the measure of the increase or decrease in velocity of an object per unit time. It is expressed in m/s^2 (C.G.S.) or km/h^2 (S.I.).
b)The S.I. unit of retardation is just the same as accceleration, i.e., the S.I. unit of retardation is km/h^2.
c) The value of g (acceleration due to gravity) on the earth is not same everywhere. The maximum value of g is at the poles and the minimum value is at the equator. The average value of g is 9.8 m/s^2.