Which one of the following will not generate electromagnetic waves or pulses? (A) an alternating current (B) an accelerating electron (C) a proton in simple harmonic motion (D) a direct current (E) charged particles traveling in a circular path in a mass spectrometer

The correct Option is D

Explanation:

Direct current do not generate electromagnetic waves because it does not have the attributes of electromagnetic wave especially the fact that every electromagnetic wave do alternate with  time causing wave to be propagated but a direction current do not alternate with time

0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.