Is a glacier nothing more than a huge mineral flowing downhill?

Which atomic model was proposed as a result of j. j. thomson’s work?

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.