Aparticle with charge − 5.20 nc is moving in a uniform magnetic field b⃗ =−( 1.24 t )k^. the magnetic force on the particle is measured to be f⃗ =−( 4.00×10−7 n )i^+( 7.60×10−7 n )j^. a calculate the x-component of the velocity of the particle.

b calculate the y-component of the velocity of the particle.

c calculate the scalar product v⋅f

d what is the angle between v and f ? give your answer in degrees.