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Any object can be used as the reference. There's no such thing as an 'unmoving' object. It's only unmoving relative to itself or to other things that are moving exactly the same as the object. That's the whole reason that you need a reference point.
They do not always create the same image. They have different focal points and objects at different distances which create an image different from the object in magnitude or orientation.
The object- and image-points of a particular lens are described as conjugate. The object point, or the point at which the image is taken from, and the image point, the image itself, are able to be flipped perfectly, as if the object is placed where the image was, an image will appear where the object was.
It is a measure of an objects ability to conduct electrical current between two points
the sun and the center of our galaxy, even the center of the known universe if it can be pinpointed
Points are the only such objects.
It can allow you to define shapes but that is not quite the same thing as an object.
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Determine the position of the object at two different times. The vector joining the first with the second of those positions points in the direction of the objects motion.
An infinite number of points (0-dimensional objects) can form a line (a 1-dimensional object).
Nothing will happen. Nothing will happen. I think.
You can conclude that the acceleration of the object is not constant.
L points also known as Lagragian points, Libration points and Lagrance points. the L points are the five positions in an orbital configuration where a small object affected only by gravity can theoretically be stationary relative to two larger objects (such as a satellite with respect to the Earth and Moon).
True. Points are geometric objects with no dimensions.
None. Points do not have dimensions.
Zero. Points are zero dimensional objects. Straight lines are one dimensional objects. Planes and surfaces are two dimensional objects. Volumes and polyhedra are examples of three dimensional objects.