A closed System Contains 2kg of air having Constant Specific heats (Cv=0.718kj/kgk) and (Cp = 1.005kj/kgk). The air is
Compressed isothermally from 101kpa, 25°c to 310Kpa. Determine,
The work done
The heat transfer
The Change in internal energy​

The intensity, or loudness, of a sound can be measured in decibels (db), according to the equation , where i is the intensity of a given sound and is the threshold of hearing intensity. what is the intensity, in decibels, [i(db)], when ? use a calculator. round to the nearest whole number. 8 9 19 80

The image below shows numerous volcanic mountains in the pacific northwest. what is the most likely cause of the volcanic and earthquake activity in this region?

The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .