A particle moving in a straight line covers half of a distance with Speed 3 metre per second the other half of a distance is covered in 2 equal time intervals at speed of 4.5 M second and 7.5 seconds respectively the average speed of particle during this motion

Where do magnetic lines of force enter earth?

Amass weighing 24 pounds, attached to the end of a spring, stretches it 4 inches. initially, the mass is released from rest from a point 8 inches below the equilibrium position. find the equation of motion. (use g = 32 ft/s2 for the acceleration due to gravity.)

(a) if the pressure in gas is doubled while its volume is held constant, by what factor do (i) vrms and (ii) change? (b) is it possible to boil water at room temperature (20oc) without heating it? explain.