Answer:
The focal length of the lens is -5.88 cm.
Explanation:
We know that magnification in case of lenses is given by

where
'v' is the position of image
'u' is the position of the object
Since it is given that m = 0.4 thus we can write

Now the distance between the object and the image in case of concave lens is given by

Now by lens formula the focal length of the lens is given by

Para hacerlo a m/s un método muy práctico es sólo dividir entre 3.6, por cuestiones de conversiones, lo puedes comprobar.
212 km/hr /3.6 = 58 m/s
Comprobación :
V= d / t
V= 212 m / 18000 seg <---- nota que aquí los segundos son de las 3.1hrs
V= 58 m/seg
It’s an assortment of compound molecules
Natural selection also means survival of the fittest. This is where organisms who are better adapted to their environment survive and produce more offspring compared to the ones who aren’t as adapted to their environment.