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  2. Electrical resistance and conductance - Wikipedia

    en.wikipedia.org/wiki/Electrical_resistance_and...

    Also called chordal or DC resistance This corresponds to the usual definition of resistance; the voltage divided by the current R s t a t i c = V I. {\displaystyle R_{\mathrm {static} }={V \over I}.} It is the slope of the line (chord) from the origin through the point on the curve. Static resistance determines the power dissipation in an electrical component. Points on the current–voltage ...

  3. Electrical resistivity and conductivity - Wikipedia

    en.wikipedia.org/wiki/Electrical_resistivity_and...

    The more regular the lattice is, the less disturbance happens and thus the less resistance. The amount of resistance is thus mainly caused by two factors. First, it is caused by the temperature and thus amount of vibration of the crystal lattice. Higher temperatures cause bigger vibrations, which act as irregularities in the lattice.

  4. Rolling resistance - Wikipedia

    en.wikipedia.org/wiki/Rolling_resistance

    Several factors affect the magnitude of rolling resistance a tire generates: As mentioned in the introduction: wheel radius, forward speed, surface adhesion, and relative micro-sliding. Material - different fillers and polymers in tire composition can improve traction while reducing hysteresis.

  5. Traction (mechanics) - Wikipedia

    en.wikipedia.org/wiki/Traction_(mechanics)

    2.1 Factors affecting coefficient of traction. 2.2 Traction coefficient in engineering design. 3 See also. 4 References. ... air resistance, rolling resistance, etc. ...

  6. Thermal conductivity and resistivity - Wikipedia

    en.wikipedia.org/wiki/Thermal_conductivity_and...

    The construction industry makes use of measures such as the R-value (resistance) and the U-value (transmittance or conductance). Although related to the thermal conductivity of a material used in an insulation product or assembly, R- and U-values are measured per unit area, and depend on the specified thickness of the product or assembly.

  7. Friction - Wikipedia

    en.wikipedia.org/wiki/Friction

    Generally the force of rolling resistance is less than that associated with kinetic friction. [74] Typical values for the coefficient of rolling resistance are 0.001. [75] One of the most common examples of rolling resistance is the movement of motor vehicle tires on a road, a process which generates heat and sound as by-products. [76]

  8. 7 foods that kill and lower testosterone - AOL

    www.aol.com/7-foods-kill-lower-testosterone...

    Other factors that can lower testosterone In addition to the aforementioned foods that can kill testosterone, there are other factors that can negatively impact the amount of T in your body. These ...

  9. Contact resistance - Wikipedia

    en.wikipedia.org/wiki/Contact_resistance

    Contact resistance values are typically small (in the microohm to milliohm range). Contact resistance can cause significant voltage drops and heating in circuits with high current. Because contact resistance adds to the intrinsic resistance of the conductors, it can cause significant measurement errors when exact resistance values are needed.