what is the relationship between resistance and radius?
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Vessel resistance (R) is directly proportional to the length (L) of the vessel and the viscosity (η) of the blood, and inversely proportional to the radius to the fourth power (r4).
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Radius, Diameter and Circumference The Radius is the distance from the center outwards. The Diameter goes straight across the circle, through the center.
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Air resistance depends on two important factors - the speed of the object and its surface area. Increasing the surface area of an object decreases its speed.
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How do the graph and the slope of the line relate to Ohm's law? The graph showcases the relationship between voltage and current. As we can see this is a linear relationship. Also the slope represents the resistance of the resistor which is calculated dividing voltage by the current.
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R-Values. An insulating material's resistance to conductive heat flow is measured or rated in terms of its thermal resistance or R-value -- the higher the R-value, the greater the insulating effectiveness. ... Installing more insulation in your home increases the R-value and the resistance to heat flow.
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Example. Calculate the resistance in ohms of a resistor when the voltage is 5 volts and the power is 2 watts. The resistance R is equal to square of 5 volts divided by 2 watts, which is equal to 12.5 ohms.
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The total length of the wires will affect the amount of resistance. The longer the wire, the more resistance that there will be. There is a direct relationship between the amount of resistance encountered by charge and the length of wire it must traverse.
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Relation between Diameter and Radius: Diameter of a circle is twice of its radius.
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The relationship between the radius and the velocity of a rotating object is inverse. The smaller the radius, the smaller the circumference; because of this, when the mass of the body in circular motion is constant, it takes less time for the body to complete a revolution.
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['The resistance, R of the conductor. A higher resistance produces more heat.', 'The time, t for which current flows. The longer the time the larger the amount of heat produced.', 'The amount of current, I.']
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In fact, the average speed and the radius of the circle are directly proportional. A twofold increase in radius corresponds to a twofold increase in speed; a threefold increase in radius corresponds to a three--fold increase in speed; and so on.
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The formula is π(r^2)*h, with r being the radius and h being the height. So the relationship between the radius and volume would be that the volume of a cylinder is the radius squared and multiplied by π and h.
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The resistance of a cylindrical segment of a conductor is equal to the resistivity of the material times the length divided by the area: R≡VI=ρLA. The unit of resistance is the ohm, Ω. For a given voltage, the higher the resistance, the lower the current.
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Covalent Radius The distance between two nuclei will give the diameter of an atom, but you want the radius which is half the diameter. Covalent radii will increase in the same pattern as atomic radii. The reason for this trend is that the bigger the radii, the further the distance between the two nuclei.
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Resistance is inversely proportional to the square of the diameter of a wire. If diameter is doubled then resistance is reduced by 4 times.
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First, the total length of the wires will affect the amount of resistance. The longer the wire, the more resistance that there will be. ... Wider wires have a greater cross-sectional area. Water will flow through a wider pipe at a higher rate than it will flow through a narrow pipe.
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For a fixed resistor, the voltage is directly proportional to the current. Doubling the amount of energy into the resistor results in a current twice as fast through the resistor. This relationship is called Ohm's Law and is true because the resistance of the resistor is fixed (because the temperature does not change).