What is Cross sectional area: Definition and 24 Discussions

In geometry and science, a cross section is the non-empty intersection of a solid body in three-dimensional space with a plane, or the analog in higher-dimensional spaces. Cutting an object into slices creates many parallel cross-sections. The boundary of a cross-section in three-dimensional space that is parallel to two of the axes, that is, parallel to the plane determined by these axes, is sometimes referred to as a contour line; for example, if a plane cuts through mountains of a raised-relief map parallel to the ground, the result is a contour line in two-dimensional space showing points on the surface of the mountains of equal elevation.

In technical drawing a cross-section, being a projection of an object onto a plane that intersects it, is a common tool used to depict the internal arrangement of a 3-dimensional object in two dimensions. It is traditionally crosshatched with the style of crosshatching often indicating the types of materials being used.
With computed axial tomography, computers can construct cross-sections from x-ray data.

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  1. qnach

    A Software for cross section calculations using .cif files

    Is there any software available to calculate cross section using .cif file?
  2. D

    Engineering Determine a suitable cross sectional area for strength

    Lenght=300mm, Force at the end of the handlebar is 200N What i would like to know is: does that 20x20mm end piece affect the calculation process in any way? and whether there are more than 3 types of stresses in this case. First stress being moment created by the 200N and second stress is shear...
  3. SanPhysics

    Calculate the required Cross sectional area of toroidal core

    For example how to calculate required cross-section area of the toroidal core for 100VA transformer.Is that any simple formula.
  4. Armando Arizpe

    Elongation With change in Force

    Homework Statement If said percentage of a maximum load (Max load 35N and 30% of that load) is held by a wire, by what percent of its length will it stretch? Homework Equations ΔL/L = FA/Y Y = Youngs modulus The Attempt at a Solution (All values are random, just trying to understand the...
  5. G

    A cube of side L=2 m is made of a cooper cable with 2mm^2

    Homework Statement A cube of side L=2m is made of a cooper cable with 2mm^2 of cross section area. 1) Find the electric resistance of one side of the cube. 2) Find the equivalent resistance in between the points A and B.
  6. Y

    Mechanics of Materials: Cross Sectional Area Problem

    https://www.physicsforums.com/threads/mechanics-of-materials-homework.855915/']<Moderator's[/PLAIN] note: thread moved from a technical forum, so homework template missing.> https://www.physicsforums.com/threads/mechanics-of-materials-homework.855915/ This is a link to a problem which I am...
  7. T

    Calculate terminal velocity when given cross sectional area

    Homework Statement Two packages are dropped from an airplane. A parachute can increase the cross sectional area of each packages by a factor of 31. The parachute on package 1 fails to open, and the terminal speed of package 1 is 10 m/s. The parachute on package 2 opens. What is the terminal...
  8. S

    Pressure standing wave pattern, change cross sectional area

    Homework Statement See pictures. There are 2 parts to the problem but I can probably figure out the second part once I get the first part. [/B] Homework Equations Antinodes (minimum pressure) at Nodes (maximum pressure) at [/B] Equation for a standing wave: The Attempt at a Solution...
  9. Prof. 27

    Current through Point or Cross Sectional Area

    Homework Statement I'm finding conflicting statements. One says that current is measured as the amount of charge per time that enters through a cross sectional area. Another says that current is measured as the amount of charge per time that passed through a point. Could someone clarify this...
  10. M

    Cube Projectile Motion: Air Resistance & Cross Sectional Area

    We have a solid cube with some mass that we fire as a projectile at some angle. The cube is launched in such a way that two of the faces are perpendicular to the initial velocity vector. Assuming there is air resistance, would the cube change its orientation while it flies, even if the mass is...
  11. M

    Izod Impact test Cross Sectional Area

    Homework Statement Ok, so in a lab I was preforming Izod impact tests on notched polymer specimens. To complete my calculations I need to determine the correct cross-sectional area to use (Which is baffling me as the simple things usually do) The sample was loaded with the notch facing...
  12. J

    Cross Sectional Area, Stress and Strain confusion

    Homework Statement For each material calculate the cross sectional area in m². Each sample is of rectangular cross section 20mm by 1mm. Produce Stress and Strain tables for the data. TEST DATA FOR X (N) EXTENSION (mm) 1000 0.48 2000 0.60 3000 0.70 4000 0.80 Homework...
  13. A

    How much is the cross sectional area for the tube to fill up the compartment?

    Homework Statement abstract question, but we can assume the volume,V to be filled is 0.0001m3 and time for it to filled up water is 60seconds, water density is 1000kg/m3, so how much should be the cross sectional area,A for the tube?Homework Equations Volume flow rate=delta Volume/delta time...
  14. alane1994

    MHB Help Me Solve a Math Problem Involving Trapezoidal Cross Sectional Area

    I have asked for help from a math professor and it didn't really help. It would be absolutely fantastic if one of you could help me out. Here is the problem verbatim. A trough has a trapezoidal cross section with a height of 1 m and horizontal sides of width 0.5 m and 1 m. Assume the length of...
  15. S

    You have a fine wire with a cross sectional area of 9.4×10−10 m2

    You have a fine wire with a cross sectional area of 9.4×10−10 m2 and a length of 1.1 m. You wish to determine what it is made out of, so you connect it to a standard AA battery (1.5 V) and measure a current of 0.048 A. What material is the wire most likely made out of? The options for the...
  16. A

    Finding Moment of Interia of a 'Loop' when given Density & Cross sectional area

    Homework Statement I eventually have to solve for maximum angular acceleration of the loop in a magnetic field, and I have gotten everything with the exception of the moment of inertia, so I won't include the emf and B known variables. Known: a copper wire with a density of \rho = 8960...
  17. R

    Calculate Cross Section Area of Steel Rod for 3 Tonne Tension

    Homework Statement A medium carbon annealed steel rod has a rectangular cross section and must cope with a tension of 3 tonnes. The thickness of the rod is 15mm. Calculate the size of the cross section. Homework Equations ? The only formula I know with CSA and force is: stress = Force...
  18. R

    Cross sectional area - Young Modulus

    out of interest does cross sectional area change when a force is applied (lets say I had a wire and I applied a force to it, the wire would stretch ) does its cross sectional area change
  19. M

    Cross sectional area (NOT A QUESTION)

    Just for those who don't know a thing about cross sectional areas, I thought I'd explain. A cross sectional area describes the area of a flat (2-dimensional) representation of a 3-dimensional object. So if I cut a cylinder, instead of seeing two circles, I see four circles (unless there are...
  20. D

    Relationship of Power and cross sectional area to electric field

    I am having difficulty finding the equation or relationship between power (watts) and cross sectional area (m2) to finding the value of an electric field. I am just confused and can't seem to understand and my textbook isn't making sense to me Any help would be appreciated and I...
  21. K

    Young's Modulus Calculation for Nylon Rope Cross Sectional Area

    Homework Statement I'm working on a problem that is asking me to find Young's Modulus. I have the right formula and everything that I need but I can't seem to figure out how to find the cross sectional area of a nylon rope. The rope is 21 m long and 1.4 cm in diameter. Homework...
  22. P

    Cross Sectional Area to Newtons

    [b]1. When the hot water in a certain upstairs bathroom is turned on, a series of 18 "ticks" is heard as the copper hot-water pipe slowly heats up and increases in length. The pipe runs vertically from the hot-water heater in the basement, through a hole in the floor 5 m above the water heater...
  23. U

    How is "cross sectional area" different from "area"?

    How is "cross sectional area" different from "area"? I don't understand what cross sectional area is and there is no explanation about it in my textbook.I cannot find this anywhere and am really desperate right now. Can someone please help me?
  24. E

    Cross sectional area of cylinder?

    using Darcys law... ...what is Cross sectional area of cylinder?