An ice cube has a volume of 10cm3. the mass of the bar is 9.2 g. what is the density of the ice cube?

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o

Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)