# Posts by victor2

Total # Posts: 5

**chemistry**

1. A student wanted to measure the amounts of (Ca2+) in the human blood. She got 1.00ml which she treated with Na2C2O4 solution. The resulting Ca2C2O4 precipitate was filtered and dissolved in dilute H2SO4 to release C2O42- into solution and allow it to be oxidized. The ...

**maths**

show that sin3theta-cos2theta =(1-sin theta)(4sin squared theta + 2sin theta -1)

**maths**

show that sin3theta-cos2theta =(1-sin theta)(4sin squared theta + 2sin theta -1)

**physics**

consider a solid cylinder rolling from rest down a plane inclined at an angle theta to the horizontal.After rolling down a distance s down the plane,determine (i) acceleration of the cylinder (ii) if the cylinder is hollow ; find its acceleration after a distance s

**physics**

A space probe of mass M is moving with uniform velocity v far from earth and from other massive bodies,and it is planned to deflect from its trajectory through an angle theta by firing from it a suitable mass at velocity v.Derive an expression for the suitable mass m