a >A bullet of mass 50g moving with velocity of 400 m/s penetrates 20cm in a wall and comes to rest. What is the amount of the resistive force applied by the wall? b. If 250ml of an aqueous solution of sodium hydroxide contains 4g of salt in it, calculate the strength of the solution in mol/L unit. [Na=23, O=16, H=1]
Answers
Answered by
0
Answer:
a)2×10^4 newton. b)0.4 mol /l
Attachments:
Similar questions