Which scenario would result in a drop in the pitch being observed? a) The observer moves closer to a stationary source.

b) The source moves toward a stationary observer.

c) A source moving toward an observer suddenly stops.

d) The observer and the source move in the same direction at the same speed.

it is easily magnetized.

less than one you can't create energy

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

hope this : d