In an experiment, a shearwater (a seabird) was taken from its nest, flown a distance 5190 km away, and released. it found its way back to its nest 15.0 days after release. if we place the origin in the nest and extend the +x-axis to the release point, what was the bird's average velocity for the return flight?

The bird's average velocity is 4.00 m/s.

Explanation:

Given that,

Distance = 5190 km

Time

We need to calculate the bird's average velocity for the return flight

Using formula of average velocity

Where, d = position

t = total time

Put the value into the formula

Negative sign shows the bird is traveling in negative x -axis.

Hence, The bird's average velocity is 4.00 m/s.

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

answer

procedural programming, object-oriented programming

explanation

procedural programming is a type of computer programming language that specifies a series of well structured steps and procedures   within its development period of time. it contains a systematic order of statements, functions and commands to complete a computational task or program. it is centered on creating procedures. while object oriented programming is a programming language that is centered on creating objects rather that actions and data rather than logic.. it has four principles which are inheritance, polymorphism, abstraction and encapsulation