Plz me answer this 1 queston will give brainliest

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^?

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter