
Evaluación de Calor y Temperatura

Quiz
•
Physics
•
9th Grade
•
Medium
Christofer Hurtado
Used 14+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuánto es en grados Celsius y grados Kelvin la temperatura del cero absoluto?
-100°C y-273,15°K
0°C y 0°K
-273,15°C y 0°K
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuánto es la temperatura normal de las personas en grados Fahrenheit, si en grados Celsius es de 37°C?
98.6 °F
79 °F
100 °F
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cierto proceso necesita de 4556 J de calor, expresa esta energía en cal y BTU:
125 cal, 3 BTU
2456.3 cal, 8.9 BTU
1088.9 cal, 4.32 BTU
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es el calor específico del corcho, si para elevar 10° C, 10 kg de este material, es necesario suministrar 48000 cal?
0,214 cal/g ºC
0,032 cal/g ºC
0,48 cal/g °C
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Si el calor específico del vidrio es 0,2 Btu/lb·ºF, calcula la capacidad calorífica de un recipiente de este material que pesa 0,56 kg.
112 cal/C
125 cal/°C
56 cal/°C
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Determina la cantidad de calor necesaria para fundir 1 kg de cobre si conocemos que su punto de fusión es 1080 ºC y su calor latente de fusión es HF = 134*10^3 J/kg
268000 J
67000 J
134000 J
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La longitud de una varilla de acero a 30° C es de 3 m, si la calentamos a 100° C, ¿en cuánto aumenta su longitud? (Coeficiente de dilatación lineal del acero α=12*10-6/°C
Aumenta 2,5 mm
Disminuye 3,5 mm
Aumenta 4,1 mm
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