9. Liquefying natural gas is one way to increase energy density for transport. A Samsung ship fleet with an LNG capacity of 221,000 m transports LNG from Australia to China (~ 8000 km) under full-speed 19.5 knots (36 km/h). The total power of the fleet is 57050 horsepower (1 horsepower = 746 W). The LNG tank temperature is -163.5C and density of LNG at this condition is 468 kg/m. a. If on board LNG is used to power the fleet engines, with an efficiency of 40%, estimate how much LNG is required in transport? [in J] b. What percentage of LNG on board would be used up in transport? Comment on the efficiency of this LNG transport strategy 10. An Australian billionaire and clean-energy enthusiast (Mike Cannon-Brookes) wishes to buy Australian coal-powered electricity plants in order to shut them down. a. If - with a $15 billion USD investment - he gained control of 50% of Australia's coal- powered electricity generation capacity, and closed those plants 20 years earlier than they would have been closed otherwise, what cost has he paid to abate this CO2 [$USD/T_CO2]? b. How does that compare to the standard carbon prices, or carbon taxes? c. What could go wrong with Mike's strategy?