The word energy is used in ways. But what a mean in physics. Here is a brief description: The capacity of an object to do work is called Energy. The capacity to do work may become in many ways but one...
Suppose an object having mass m has an initial velocity u and after certain time t it attains a velocity v. Now momentum P1=mu and P2=mv So change in momentum =P2-P1=mv-mu =m(v-u) So the rate of change...
Questions: Solution: Q.18 Q.19 Answer = 32 In radius = 4 Let tangents fro A be p, tangents from B be q and tangents from C be r. So, AB+BC-AC = 8. q+q = 8, q = 4. Same...