The vectors A and B are given by: A=2i +3j +7k B=-i + 6j -5k Calculate:- (i)A×B (ii)A•B (iii) Angle between A and B. (9 marks) April 11, 2016 Read More »
Prove that for any vector function A, the divergence of its curl is zero as in the equation below, Show that[??•(??×A)]=0 (4 marks) April 11, 2016 Read More »
If a particle of mass (m) at a point, whose position vector is (r) moves in a force field F, show that the torque produced is the rate of change in angular momentum.(4 marks) (d)The depth (h) of a valley in metres is given by; h(x,y) =3 x2 + 2y2 -50x + xy +20y +300 where y is the distance in meters north and x is the distance in meters east of a tower Determine: (i)Co-ordinates of the lowest point on the valley from the tower. (ii)The depth of the valley . (7 marks) April 11, 2016 Read More »
A body has an initial angular velocity of 3 rad/sec and a constant angular acceleration of 2 rad/sec2. Calculate the (i)Angular displacement after 3 seconds. (ii)Angular velocity at t= 3 seconds (5 marks April 11, 2016 Read More »
By giving appropriate examples in each case, explain classification of geo-elements on the basis of their geochemical affinities April 10, 2016 Read More »
With the aid of a well labeled diagram, explain the modern understanding of the internal structure of the earth April 10, 2016 Read More »
State three specific objectives that would answer three commonly asked research questions March 17, 2016 Read More »