For example, if a person pulls on a rope with a force of 80 n and another person pulls on the same rope in the opposite direction with a force of 80 n, the vector sum of the two forces is zero and the system is in equilibrium.
The Most Expensive Fish in the World bluefin tuna. The most expensive fish that was caught off the coast of northern Japan, was among 570 put up for auction. Japan is the worldâs biggest consumer of seafood, with Japanese eating 80% of the Atlantic and Pacific bluefins caught. The two tuna species are the most sought after by sushi-lovers.
Danish police are investigating the theft of a bottle of vodka claimed to be the world's most expensive at $1.3m (Â£960,000). The bottle, made from gold and silver and with a diamond encrusted cap, was on loan to a Copenhagen bar which had a collection of vodkas on display.