Mass number minus the atomic number equals the number of neutrons. Mass number is the number of particles in an atom that have significant mass. Electrons are assigned a valâ¦ue of 0 since the mass is so much smaller than protons and neutrons. Protons and neutrons are similar in mass and are assigned mass number of 1.
Why Uber is losing so much money? The biggest part of the problem is that Uber is a relative small fish in the market and is not getting nearly enough customers. According to analyst reports, as of August 2015, Didi Kuaidi completed seven million rides as opposed to Uber's one million.
Paired with one-time expenses (such as a $300 down payment on the iPhone Uber gives to all drivers), the net weekly income of some new drivers begins to plummet. Jack Tse, a new Uber driver, saw his first week's net take-home pay reach just $19.41 after 11.13 hours of driving.