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Related Concept Videos

Circles01:18

Circles

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A circle in the coordinate plane is defined as the set of all points that lie at a constant distance, known as the radius, from a fixed point called the center. This relationship is captured using the distance formula. For a point (x, y) on the circle and a center (h, k), the distance between them equals the radius r. By squaring both sides of the distance formula, the equation of the circle is written in standard form:Constructing the Equation from Geometric InformationIf the center and the...
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Dynamics of Circular Motion01:30

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An object undergoing circular motion, like a race car, is accelerating because it is changing the direction of its velocity. This centrally directed acceleration is called centripetal acceleration. This acceleration acts along the radius of the curved path (thus is also referred to as radial acceleration).
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Dynamics Of Circular Motion: Applications01:17

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Suppose a car moves on flat ground and turns to the left. The centripetal force causing the car to turn in a circular path is due to friction between the tires and the road. For this, a minimum coefficient of friction is needed, or the car will move in a larger-radius curve and leave the roadway. Let's now consider banked curves, where the slope of the road helps in negotiating the curve. The greater the angle of the curve, the faster one can take the curve. It is common for race tracks for...
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Non-uniform Circular Motion01:22

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In uniform circular motion, the particle executing circular motion has a constant speed, and the circle is at a fixed radius. However, not all circular motion occurs at a constant speed. A particle can travel in a circle and speed up or slow down, showing an acceleration in the direction of motion. In that case, the motion is called non-uniform circular motion, and an additional acceleration is introduced, which is in the direction tangential to the circle. 
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Mohr's Circle for Moments of Inertia01:10

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Mohr's circle is a graphical method to determine an area's principal moments of inertia by plotting the moments and product of inertia on a rectangular coordinate system.
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Spherical Coordinates01:23

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Spherical coordinate systems are preferred over Cartesian, polar, or cylindrical coordinates for systems with spherical symmetry. For example, to describe the surface of a sphere, Cartesian coordinates require all three coordinates. On the other hand, the spherical coordinate system requires only one parameter: the sphere's radius. As a result, the complicated mathematical calculations become simple. Spherical coordinates are used in science and engineering applications like electric and...
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CIRCLE-Seq for Interrogation of Off-Target Gene Editing
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Round in circles.

David Newnham

    Nursing Standard (Royal College of Nursing (Great Britain) : 1987)
    |May 8, 2016
    PubMed
    Summary

    Many home exercise bikes are for sale, indicating abandoned fitness goals. Sellers may recoup some costs, potentially funding other purchases.

    Area of Science:

    • Exercise Science
    • Consumer Behavior

    Background:

    • A significant number of home exercise bikes are available for resale.
    • This suggests a common trend of unused fitness equipment.

    Purpose of the Study:

    • To analyze the market for pre-owned home exercise bikes.
    • To understand the economic implications for sellers of abandoned fitness equipment.

    Main Methods:

    • Data sourced from online marketplaces (Gumtree).
    • Analysis of listings for home exercise bikes.
    • Estimation of potential seller returns.

    Main Results:

    • Over 1,200 home exercise bikes listed for sale.
    • Potential for sellers to recover a portion of their initial investment.

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  • Average potential return estimated at £15 per unit.

    • Conclusions:

    • The resale market for home exercise bikes highlights challenges in maintaining long-term exercise adherence.
    • Sellers can potentially offset costs associated with underutilized fitness equipment.