Answer:
When oil and water are combined, they do not mix evenly, but instead form two separate layers.
Explanation:
By definition, a pure substance or a homogeneous mixture consists of a single phase. A heterogeneous mixture consists of two or more phases. When oil and water are combined, they do not mix evenly, but instead form two separate layers.
Answer:
one half as large , initial velocity is two times larger
Explanation:
Momentum is conserved.
p₁ + p₂ = p₁' + p₂'
m₁v₁ + m₂v₂ = m₁v₁' + m₂v₂'
m₁ = m₂ =m , v₂= 0
v₁' =v₂'
mv₁ = 2mv₁'
v₁ = 2v₁'
Answer:
20.58 kJ
Explanation:
mass, m = 75 kg
height, h = 28 m
Work = m x g x h
W = 75 x 9.8 x 28
W = 20580 J
W = 20.58 kJ
Thus, the work done is 20.58 kJ.
Answer:
A. Prism
Explanation:
In the experiment we are able to isolate different wavelengths by shining the light through a prism, which separates the different wavelengths through refraction.
Advantages
-renewable
-emissionless
-reduces distance required for electricity to travel
- can be produced effectively on small scale
Disadvantage
-No continual supply-doesnt function on cloudy days or at nightime
-expensive
-inefficient, best solar panels today are only 40% efficient, most are worse