What does it mean to cut the mass in half?

How did german physicist werner heisenberg's uncertainty principle shake beliefs in newtonian physics?

Which answer best describes an advantage of shipping goods by canal? a) most towns would rather have canals then noisy railroads b) goods could travel very fast downstream in the canal system c) traveling by boat is a much more relaxing way to transport goods. d) heavy loads of goods could travel by boat more easily then if pulled by horses.

What are the causes and effects of the spread of christianity