43. a) State the principle of conservation of momentum.
b) Calculate the change in momentum of a body weighing 5 kg when its velocity decreases from
20 m/s to 0.2 m/s
44. Write any three applications of centrifugation.
45. a) Define solubility of the substance.
b) 50g of alcohol has been dissolved in 500g of water. Calculate the mass by mass percentage
concentration of the solution.
OR
a) Define a saturated solution.
b) 40g of alcohol has been dissolved in 460g of water. Calculate the mass by mass percentage
concentration of the solution.
46. State any three applications of universal law of gravitation.
OR
a) Can a body have mass but no weight? Give reason for your answer.
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be there in a few weeks ago we were going to the yy I have no where to get a chance to get it to the
Explanation:
h ni mera sag I was going to bed now and then Njaajs jahshbsvha I have no idea what to do it for the next time we were going out to the gym and work on the phone with my family and the other one is the best of all time low on gas money to get the money
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