Show all working explaining detailly each stepAnswer must be typewritten with a computer keyboard!Answer Q3a The rate at which the remainder of a substance dissolves in a small quantity of water is inverselyproportional to the weight, w grams of the substance already dissolved. Initially, there arc 20 gramsof the undissolved substance. Show that after lime t scoonds, the sinetinn can be modelled by thedifferential equation3.(a)-k(20- w)=dtwhere k is a positive constant.Afler I second, 6 grams of the substance have dissolved.Show (hat w-36tHence, find(1)the weight of the substance remaining undissolved after 4 seconds.(i)the time taken for 18 grams of the substance to be dissolved.(L)A prarticle performs simple harmonic motion btween two points A and B which are 10 metres aparton a horizontal straight line. Whcn the particle is 3 metres away from the centre, O, of the line AB,its spced is 8ms'.Find(1)the periodie time of the motion.(ii)the least timo required for the particle to move from B to the midpoint of OA.

Name: Show all working explaining detailly each stepAnswer must be typewritt
Uploaded: 2024-03-20T06:38:44.000Z
Channel: Bartleby
Description: Show all working explaining detailly each stepAnswer must be typewritten with a computer keyboard!Answer Q3a The rate at which the remainder of a substance dissolves in a small quantity of water is inverselyproportional to the weight, w grams of the