What criteria would you use to decide whether to use the semi-infinite model to describe conduction heat transfer through a material?
What will be an ideal response?
The semi-infinite model is useful if the material is deep enough, or thick enough
that the heat transfer effects at its boundary have not penetrated to a depth
where the temperature has not yet changed. If the material is thicker than this
amount, the semi-infinite model is appropriate.
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Each of the following examples contains two simple sentences that could be combined with a coordinating conjunction. In each case, choose A, B, or C to indicate which coordinating conjunction best combines the two sentences. Snow had been falling all night. In the morning we had a winter fantasy
a. or b. yet c. so
Gran San Bernardo e Gran Paradiso sono _______.
Your host brother and his two friends Fabio and Maurizio are planning a tour of La Valle d’Aosta for you. Select the appropriate responses to each question based on what you learned in chapter two. Montagne Parchi Fiumi
How does surveying a reading selection help with comprehension?
What will be an ideal response?
A LEER:Las reuniones familiares en Latinoamérica.Pedro was asked to write this paragraph for a culture class at the university. Read what he wrote and then choose the option that best completes the sentences.
Las reuniones familiares en Latinoamérica En Latinoamérica las familias generalmente son muy grandes. Se componen de papá, mamá, hijos, sobrinos, primos, tíos, abuelos, y una o varias mascotas (casi siempre es un perro o un gato) y, a veces, toda la familia vive en una casa grande. Las fiestas (bodas, cumpleaños, graduaciones) son muy alegres, con mucha comida y siempre hay muchas personas. En las reuniones de mi familia, hacemos diferentes actividades: mis abuelos miran la televisión, mis hermanos escuchan música y bailan, mis tíos hablan de política, mis primos tuitean o mandan mensajes de texto, pero a la hora de la comida, todos se reúnen en la mesa y comparten muy felices. En las fiestas, los primos de Pedro…? A. ?usan sus teléfonos. B. ?hablan de política. C. ?comen muy poco.