Explanation:
F=ma
m=3kg
F=7N
7=3a
a=7/3
acceleration=velocity/time taken
7/3=velocity/6
velocity=7/3×6/1
velocity=14ms-¹
A fullerene is an allotrope of carbon in the form of a hollow sphere, ellipsoid, tube, and many other shapes. Spherical fullerenes, also referred to as Buckminsterfullerenes or buckyballs, resemble the balls used in association football. Cylindrical fullerenes are also called carbon nanotubes (buckytubes).
Answer:

Explanation:
first write the newtons second law:
F
=δma
Applying bernoulli,s equation as follows:
∑
Where,
is the pressure change across the streamline and
is the fluid particle velocity
substitute
for {tex]γ[/tex] and
for 

integrating the above equation using limits 1 and 2.

there the bernoulli equation for this flow is 
note:
=density(ρ) in some parts and change(δ) in other parts of this equation. it just doesn't show up as that in formular
Answer:
A. The sound wave will reflect off Buildings and automobiles.
Explanation:
This is because the sound waves would more likely propagate through diffraction through buildings and transmission through the air. It is also more likely to be absorbed by buildings than for multiple reflections to occur off buildings and automobiles. In the process of reflection, these materials would absorb the sound energy thereby reducing its ability to reflect.
Answer:
Explanation:
TE = KE + PE which is total energy available to a system is equal to its potential energy plus its kinetic energy, and that total energy will remain throughout the entire "trip", whatever it might be. So a is your answer.