Answer:
Magnification, m = 3
Explanation:
It is given that,
Focal length of the lens, f = 15 cm
Object distance, u = -10 cm
Lens formula :
v is image distance
Magnification,
So, the magnification of the lens is 3.
I will discuss what is a gravitational force since no figures are attached or given. An objects weight is dependent upon its location in the universe
because they exhibit gravitational waves. For example, the earth is a massive
planet. Because of its massiveness, it exhibits a strong gravitational force
within it. In turn, the objects near the earth will be attracted to it and
thereby feels a much stronger gravity on earth. That is why bodies of water,
despite its liquid features, stick to the earth. The heavier the body is, the
stronger its gravitational pull. Another example is the Milky Way Galaxy, there is a
gravitational pull because it is to other galaxies. Also, other galaxies are
heavier than the earth and therefore, it is attracted to the Milky Way galaxy
because of its gravitational pull.
Answer:
Explanation:
Spring has a tendency to store energy in them and deform its shape when force is applied on it. Once the applied force is removed it regains its original shape and size.
It is in helical shape and is used in mattress to give structure and support. Spring have elastic nature and follows spring forces, F = k * x
where is the applied force, k is the spring constant and x is the amount of extension.
When a heavier person sits on a mattress, more weight is applied on springs and they form coils, as weight is removed they regains its shape again.
Explanation:
Upstroke is a mechanism which helps to raise the plunger and downstroke helps to help lower the plunger. On the up-stroke of the plunger, the lower valve opens and the upper valve is closed. ... Whereas, on the downstroke, the lower valve closes and the upper one opens.
