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.
NerdWallet used data from SherpaShare to calculate how much drivers need to work to make certain incomes after paying for gas, insurance and car maintenance. Uber drivers make the most money (pretax) per ride, on average â $15.97, compared with $13.35 for Sidecar and $11.48 for Lyft. Where you live also pays a role. Lyft drivers in Dallas make the least money per trip, which means they would have to provide 97.65 rides before paying for the city's average annual car insurance premium.