Calculate q when 29 J of work is done on a system and its internal energy increases by 96 J

In a process of an ideal gas, the pressure is halved while the volume is kept constant. During this process, 750J of heat flows out of gas. What is the change in the internal energy of the gas in this process?

8000 J of heat from a hot reservoir is put into a reversible (Carnot) heat engine whose hot and cold reservoirs are at 600 K and 150 K respectively. How much work does the engine do?

The pressure change of a balloon varies according to the P=CV*1/3 equation (C = 100 kPa m and n= -1/3) Since the balloon is inflated with air at a temperature of 25 ° C from 1 m3 volume to 3 m3 volume at 25 ° C , (R air = 0.287 kJ / kg 'K) a) Find the mass (kg) of air in the final state. b) Find the work (kj) done by air. c) Show the work done on the P-v diagram.

A crate of mass 9.8 kg is pulled up a rough incline with an initial speed of 1.54 m/s. The pulling force is 102 N parallel to the incline, which makes an angle of 20.5° with the horizontal. The coefficient of kinetic friction is 0.400, and the crate is pulled 5.04 m. (a) How much work is done by the gravitational force on the crate? נ| (b) Determine the increase in internal energy of the crate-incline system owing to friction. נן (c) How much work is done by the 102-N force on the crate? J (d) What is the change in kinetic energy of the crate? J (e) What is the speed of the crate after being pulled 5.04 m? m/s