Answer:
The value of the distance is
.
Explanation:
The velocity of a particle(v) executing SHM is

where,
is the angular frequency,
is the amplitude of the oscillation and
is the displacement of the particle at any instant of time.
The velocity of the particle will be maximum when the particle will cross its equilibrium position, i.e.,
.
The maximum velocity(
) is

Divide equation (1) by equation(2).

Given,
and
. Substitute these values in equation (3).

Answer:
A. cell walls
Explanation:
Plants have cell walls but animals dont.
By studying meteorites which are the most ancient material in space.
Answer:
They provide a source of electrons to be released by the photoelectric effect, and They provide a path through which released electrons move to form an electric current.
Explanation:
A p e x