It is a line. A line has a midpoint, and other locations defined from the midpoint, but is infinitely long.
A line.
A rectangle.
a plane
A cylinder is not a 2D object because it has three dimensions - length, width, and height. It has a circular base and a curved surface, which give it depth. A 2D object would only have two dimensions and would lack any depth or thickness.
An object that exists in three dimensions is called a solid.
This is another definition of a line. It has only one dimension: infinite length.
A ray.
A line.
Height (thickness or dept) Width Length
A rectangle.
a plane
its called a plane
It becomes double as K=Q/t×L/A(T2-T1) so if the thickness (L) of an object is doubled the thermal conductivity will be doubled as thermal conductivity is directly proportional to the thickness/L of the object K=L K=2L,K=2 two times
Dimension in this case refers to how many "directions" an object has. One dimensional means something that only extends in one direction, like a line. Two dimensions is a surface, it has a width and a length, but no thickness. Thress dimensional is like most stuff we have around us, things with length, width, and height.
A cylinder is not a 2D object because it has three dimensions - length, width, and height. It has a circular base and a curved surface, which give it depth. A 2D object would only have two dimensions and would lack any depth or thickness.
It becomes double as K=Q/t×L/A(T2-T1) so if the thickness (L) of an object is doubled the thermal conductivity will be doubled as thermal conductivity is directly proportional to the thickness/L of the object K=L K=2L,K=2 two times
The weight of an object at infinity would be zero since there is no gravitational force acting on it at that distance.