The answer is, "B", "Ammonia".
Answer:
As the particles move further away from their normal position (up towards the wave crest or down towards the trough), they slow down.
Explanation:
This means that some of their kinetic energy has been converted into potential energy – the energy of particles in a wave oscillates between kinetic and potential energy. Hope that this helps you and have a great day :)
Answer
Given,
Magnetic field, B = 0.245 T
KE of the electron = 2.90 x 10⁻¹⁹ J
Speed of electron = ?



v = 7.97 x 10⁵ m/s
radius of the circular path
so,



r = 1.85 x 10⁻⁵ m