When you enter dark room in a bright day, it takes some time before you can see reasonably well in the room. Which visual process explains this phenomena? g

Carbon 14 is a naturally occurring stable

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?

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)