If it is the video I am thinking of then Yes
The following are the answers to
the questions presented:
<span>1.
</span>Mechanical Advantage =
95 ⁄ 15
MA = 6.33
2.
The
wheel-and-axle principle.
I am hoping that these answers
have satisfied your queries and it will be able to help you in your endeavors, and
if you would like, feel free to ask another question.
Answer:
B
Explanation:
Density = mass / volume
Less dense objects float to the surface so if the liquid becomes 1000 kg/m3 then it is the densest thing in the mixture, except for Q which has a density = to that of the water so it will stay in place around the middle, since the other two are more dense they will go to the bottom of the container.
When you are talking about the Principle of mechanical Energy Conservation, it is really only including the kinetic and potential energy in a total system. When frictional forces are present, although the conservation of energy law is still present, it does not work when it comes to the conservation of mechanical energy as there is another type of energy that is factored in. As friction acts on the object, that transition from potential to kinetic as it slide/falls will be completely different as some of that energy is being transformed into thermal energy. Which breaks the conservation of mechanical energy.
Answer:
A. 260 mm
B. - 18
C. 175
Explanation:
A
The expression for the lens equation is
v = 259 mm
= 260 mm or 26 cm (to 2 s.f)
check the attached files for additional solution
