hi every one,
i have one doubt i studied abt trignomentry. there finding the triangle angle or side of the triangle using sine function. if we are taking right angle triangle sine A = opp/hypo, cos A = adj/hypo and tan A=opp/adj. here we are finding angle for A only why we are having three...
we can find the wavelength of the emitted x-ray photon. using
first find the kinetic energy of the electron using K.E = 1/2 m*v^2.
then apply the formula
lambda = (h*v)/K.E
it will give the answer for you.
what is mean by gravity?
in Earth all we know gravity means some attraction to between objects.
Earth has magnetic field?. then wats diff of magnetic force.