The pilot of an aircraft wishes to fly due west in a 33.9 km/h wind blowing toward the south. the speed of the aircraft in the absence of a wind is 195 km/h. (a) in what direction should the aircraft head? (b) what should its speed relative to the ground be?

North of west

Explanation:

Given

Plane wishes to fly in west

but wind with speed 33.9 km/h towards south obstructing its path

so plane must fly at an angle of \theta w.r.t west such that it final velocity is towards west

Plane absolute speed=195 km/h

To fly towards west velocity in Y direction should be zero

thus

so Plane should head towards North of west in order to fly in west.

So plane

actual velocity is

uranium fissions/breaks up giving out energy and neutrons

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.