12. Observa la gráfica siguiente, correspondiente a una determinada sustancia: a. ¿Se trata de una gráfica de calentamiento o de enfriamiento? ¿Por qué?
b. ¿Qué cambios de estado tienen lugar?
c. ¿Cuánto valen los puntos de fusión y ebullición de la sustancia?

The key to stability is feedback between the reservoir and the fluxes into and/or out of the reservoir. assume that the rate of outflow from a reservoir depends on the size of the reservoir according to the following relationship: outflow rate= k x (size of reservoir), where k is a constant. a reservoir of water has a volume of 5000 liters, and the rate of outflow at steady state is 25 liters per minute. what is k? (give both the numerical value and its units.) what is the residence time? what is the relationship between k and the residence time?

What would be the result of an alpha particle coming into a magnetic field? a) the alpha particle will stop moving. b) the alpha particle will reverse its direction. c) the alpha particle will be deflected in a curve path. d) the alpha particle will continue to travel in a straight line.

Often called simply "velocity," this is the velocity of an object at a particular moment in time.