En una cubeta hay agua que se encuentra a temperatura ambiente (Ta= 20°C). En ella se deposita un yunque de hierro de 25 kg que se encuentra a 320°C. Luego de un breve momento, el pedazo de metal es extraído de la cubeta, donde se le mide, por medio de un termómetro digital la temperatura nuevamente, resultado marcar 60°C. Considerando que el calor especifico del hierro es de 448 [J/Kg°C] Determine:
a) Que material absorbe calor (1p) R/:
b) Que material cede calor (1p)
c) Temperatura de equilibrio térmico (2p)
d) Método de transferencia que predomina (2p)
e) Cantidad de energía que está fluyendo [Q] (6p: 2p identificar, 2p relacionar y 2p resolver
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We will use a video to study faraday’s law of electromagnetic induction by analyzing the induction that occurs due a coil of copper wire sliding along an air track that passes through an external magnetic field. specifically, we will: examine some of the main principles behind faraday’s law. apply lenz’s law to determine the direction of the induced emf. take measurements of the induced emf from the voltmeter as the coil passes into and out of the external magnetic field. use the horizontal scale provided to determine the speed of the coil. calculate the magnetic field induced in the coil as it passes into and out of the external magnetic field.
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En una cubeta hay agua que se encuentra a temperatura ambiente (Ta= 20°C). En ella se deposita un yu...
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