Un tigre camina hacia adelante y hacia atrás a lo largo de un borde rocoso. Su movimiento se muestra en la siguiente gráfica de la posición vertical, xxx, contra el tiempo, ttt. ¿Cuál es la rapidez promedio del tigre entre t= 0 s y t = 12 s?

Which if the following types of research is conducted on multiple occasions over time

Hurry! how much heat is absorbed by a 72g iron skillet when its temperature rises from 11°c to 23°c?

What belongs in the areas marked x and y? x: the internal energy of a piston system increases as heat is added and rises to a cool area y: as thermal energy is added to a container, some of the energy is lost to the environment x: as thermal energy is added to a container, some of the energy is lost to the environment y: the internal energy of a piston system increases as heat is added and rises to a cool area x: a cold spoon placed in hot liquid gets warmer y: thermal energy is converted to light energy x: thermal energy is converted to light energy y: a cold spoon placed in hot liquid gets warmer