Diseases, conditions and injuries impacting the knee and lower leg. Pain in the front and center of the knee (usually underneath the kneecap) can occur in teenagers or young adults who are physically active. Rather than a physical abnormality, itâs caused by overuse or training without adequate stretching or strengthening exercises.
Gallons of water per metric ton A metric ton (1000 kg) of water occupies exactly one cubic meter. One cubic meter is 264.17 gallons.
  * A US ton is 2,000 pounds. Every gallon of the liquid in question (7.8 pounds) is therefore 7.8 Ã· 2,000 = 0.0039 tons â¦ Now you can convert gallons into US tons by multiplying the number of gallons by 0.0039  ** For example, 1,500 gallons = 5.85 US Tons     * An Imperial ton is 2,240 pounds.