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Units of potential difference are joules per coulomb, given the name volt (V) after Alessandro Volta.Potential difference is the difference in the amount of energy that charge carriers have between two points in a circuit. Measured in Volts: Potential difference (p.d.) is measured in volts (V) and is also called voltage.

There are many forces in the universe. For convenience, these can be divided into two types – Contact force and Non-contact force.

Examples of contact force are viscous force, surface tension, elastic force, and frictional force.

Non-contact forces are nuclear force, electromagnetic force, and gravitational force.

Of these forces, the strongest force is the nuclear force and the weakest force is gravity.

Cadmium is an important industrial agent and environmental pollutant that is a major cause of kidney disease. With chronic exposure, cadmium accumulates in the epithelial cells of the proximal tubule, resulting in a generalized reabsorptive dysfunction characterized by polyuria and low-molecular-weight proteinuria.

The renal cortex is the outer portion of the kidney between the renal capsule and the renal medulla. In the adult, it forms a continuous smooth outer zone with a number of projections (cortical columns) that extend down between the pyramids. It contains the renal corpuscles and the renal tubules except for parts of the loop of Henle which descend into the renal medulla. It also contains blood vessels and cortical collecting ducts.
The renal cortex is the part of the kidney where ultrafiltration occurs. Erythropoietin is produced in the renal cortex.

Renal colic is a type of pain you get when urinary stones block part of your urinary tract. Your urinary tract includes your kidneys, ureters, bladder, and urethra.

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