Answers: 3
Physics, 22.06.2019 19:20
Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.
Answers: 1
Physics, 23.06.2019 05:00
City b is south of city a, and the 200 mile trip by car takes 4 hours. the cities are 120 miles apart in a straight line. what is the velocity of a trip from city a to city b?
Answers: 2
Physics, 23.06.2019 09:00
Which statements best describe medical uses for radioactive isotopes? check all that apply. radioactive isotopes are used to detect medical problems. high-energy gamma rays are injected into the body. radioactive isotopes are used to treat some diseases. radiation is used to kill cancer cells. radioactive isotopes are directed at tumors from outside the body.
Answers: 1
Physics, 23.06.2019 14:00
What is the angle of inclination of a mirrors in a periscope
Answers: 1
Calculate the volume of 19 kilograms of petrol if the density of petrol is 800 kg/m³. Give your ans...
Chemistry, 07.07.2019 15:00
Mathematics, 07.07.2019 15:00
English, 07.07.2019 15:00
Arts, 07.07.2019 15:00
Physics, 07.07.2019 15:00
Chemistry, 07.07.2019 15:00
Mathematics, 07.07.2019 15:00
Mathematics, 07.07.2019 15:00
Biology, 07.07.2019 15:00
Computers and Technology, 07.07.2019 15:00
Mathematics, 07.07.2019 15:00