Find the sum. Express the answer in scientific notation.
(1.54 x 10^6)+(6.15 x 10°)

Aparticle with mass 1.81×10−3 kg and a charge of 1.22×10−8 c has, at a given instant, a velocity v⃗ =(3.00×104m/s)j^. what are the magnitude and direction of the particle’s acceleration produced by a uniform magnetic field b⃗ =(1.63t)i^+(0.980t)j^?

What is the measure of a change in an objects velocity?

It is really hard for me right know