<span>Without friction, there will be undamped simple harmonic motion. The force of the spring is proportional to the distance from the equilibrium point. The period of oscillation will be independent of the amplitude.
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Convex lenses when placed in the air, will cause rays of light (parallel to the central axis) to converge.
Converging lenses, commonly referred to as convex lenses, have thicker centers and narrower upper and lower margins. The edges are outwardly curled. This lens has the ability to concentrate a beam of parallel light rays coming from the outside onto a spot on the opposite side of the lens.
The image created is referred to be a genuine image when it is inverted relative to the object. On a screen, this kind of image can be recorded. When the object is positioned at a point farther than one focal length from the lens, a converging lens creates a true image.
A virtual image is one that cannot be produced on a screen and is formed when the image is upright in relation to the object. When an item is positioned within one focal length of a converging lens, a virtual image is created. It creates an enlarged image of the object on the same side of the lens as the image. It serves as a magnifier.
Learn more about the convex lens here:
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Answer:
Option B) It decreases as someone moves away from earth's surface.
Explanation:
The atmospheric pressure at the surface of the earth is at maximum, it is seen that as we move away from the surface of the earth the pressure decreases. As on the top of mountains the atmospheric pressure is found to be low as compared to the surface of the earth.
It is assumed that the atmospheric pressure is caused due to hydrostatic measurements where the changes caused by weight of air are measured.
Also, it is observed that when there is an elevation, the atmospheric pressure decreases.
Answer:
The North Atlantic Treaty or Washington Treaty
Explanation:
The North Atlantic Treaty or Washington Treaty is the treaty that constituted the North Atlantic Treaty Organization (NATO). It was signed in Washington on April 4, 1949.
There it is established that the purpose of NATO is to guarantee the freedom and security of its member countries through political and military means.
Answer:
Each climber had to eat 72 slices of bread to compensate for the increase of the gravitational potential energy of the system climbers-Earth
Explanation:
Hi
One piece of bread releases about 
of energy in the body, but efficiency in converting the body's chemical energy into mechanical work is 9.5 %, so 
.
On the other hand, we need to calculate the total work to reach the top of Mt. Everest
, so 
Finally, we have that 
