A1-m3 tank containing air @ 25 oc & 500 kpa is connected to another tank containing 5 kg of air at 35 oc & 200 kpa through a valve. the valve is opened and the whole system is brought to thermal equilibrium with the surrounding of 20 oc. determine the volume of the second tank and the final equilibrium pressure of air. take air gas constant (r) = 0.287 kj/(kg. ok)

Scientist have use computer models to create a series of maps that show how susceptible coastal cities in island countries are to the sea rising at different levels.the map shows that a 1 meter rise would swap cities all along the us eastern seaboard. a 6-meter sea level rise with sub merge a large part of florida. thermal expansion has already raise the oceans 10 to 20 centimeters the most likely cause,directly and indirectly, for such a rise in sea level is

The strong nuclear force acts over a small distance than the electrostatic force. true or false

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?