A toy electric train moving at constant speed on a circular track that has a radius of 1.0 meters goes around the track once every 10 seconds. What is the centripetal acceleration of the train?

Why do scientists believe that light is made of streams of particles? scientists believe that light is made of streams of particles because only the presence of photons can explain phenomena observed during experiments on the photoelectric effect. these observations include only some frequencies of light causing the ejection of electrons, no time gap existing between light striking a metal and electrons being ejected, and intensity having no effect on the kinetic energy of the ejected electrons.

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Most short-period comets do not have randomly oriented orbits because