Question

Two large sheets of aluminium foil identical in size and shape are taken. One sheet is
crumbled into a tight ball and other sheet is kept as such. Now both the ball and sheet of foil
are allowed to fall through air from same height and at the same time.
a) Which piece of foil falls with greater speed and why?
b) What force comes into play when an object moves through air and on what factor does it
depend?
c) Why are the objects/bodies moving through fluids given special shapes?
hy holding it very close to his eyes. But he finds the​

Answer 1

Answer:

Most viruses have either RNA or DNA as their genetic material. The nucleic acid may be single- or double-stranded. The entire infectious virus particle, called a virion, consists of the nucleic acid and an outer shell of protein. The simplest viruses contain only enough RNA or DNA to encode four proteins