Discover Questions

Vector A makes an angle of 20° and B makes an angle of 110° with the x axis. The magnitudes of A= 20 mag of b = 30. Find angle of resultant? Plant trees on the polar caps of mars so that an ecosystem can start causing greenhouse effect trapping oxygen on the planet? Given that y=0 when x=1, solve the differential equation
xyδy/δx=y²+4,
obtaining an expression for y² in terms of x.? The height at which the acceleration due to gravity becomes g/9. in terms of r, radius of the earth is? Why hasn’t the earth collided with anything if it’s hurdling through space?