P=m/v
p=(292.2-130.2)/200
p=0.8100g/ml
Answer:
The average acceleration (-9.3 m/s2) seems in reasonable agreement with the calculated instantaneous accelerations. They jump around a lot and range from -8.0 m/s2 to -9.6 m/s2, but an average of -9.3 m/s2 seems reasonable
Explanation:
It explains how they are somewhat similar but are both reasonable.
Answer:
D. A light wave can travel without a medium.
Explanation:
Light wave can be defined as an electromagnetic wave that do not require a medium of propagation for it to travel through a vacuum of space where no particles exist.
On the other hand, mechanical waves such as sound are highly dependent on matter for their propagation and transmission.
This ultimately implies that, the properties which makes a light wave different from all mechanical waves is that, a light wave can travel without a medium of propagation.
<span>This
is because astronomers have discovered that
the Crab Nebula is 6500 light years from earth. This means it takes 6500 earth years
for light to get from the Crab Nebula to
earth. Therefore, if we are able to observe the
Crab Nebula and beyond it then it means that earth has been in existence for 6500 years and
over. </span>