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.
Volume (capacity) The basic unit of volume in the metric system is a cube, 10 centimeters on each side. Contained in this cube are 1,000 cubic centimeters or one liter. A liter contains slightly more liquid than a quart. Very large volumes may be measured in cubic meters (1 cubic meter = about 264 gallons).