Iodine- 131 has a half life of 8 days. After the disaster at F-ukushima, a fish ingested 64g of this radioactive material. 32 days later, how many grams would still be in the fish as Iodine-131? (simply provide a numerical answer)

When an object is heated it contracts. a. true b. false

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.

What is the speed of an object at a given moment?