
Quizizz2.5 prop.fisicas
Authored by SALVADOR JIMENEZ IBARRA
Engineering
University
Used 1+ times

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7 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
Definir con sus propias palabras que entiende por propiedades ópticas
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2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Calcular el peso, en kg, de una varilla corrugada de 3/8” número de 9m de longitud, sabiendo que la densidad del acero es de 7.85g/cm3
9
5.016
7.85
5.016E-3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La resistividad del cobre a 20 °C es de rCu = 1.68x10-8 W-m. ¿Cuánto será la resistencia eléctrica de un cable conductor de cobre calibre AWG#10, en 100 m?
1.68E-6
0.3194
0.51
1.3194
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuáles son las unidades del calor específico?
Cal
joules/kg
J/kg-K
BTU
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Calcular cuánta distancia, holgura en mm, que se debe dejar separadas las vías del ferrocarril, suponiendo que están hechas de acero al manganeso silicio, cuyo coeficiente de expansión térmica lineal es de 12E-6 °C-1 @ 20 °C y la longitud de las vías es de 25 m. Si la temperatura en un día soleado sube hasta 50 °C.
9
8
12
7
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuáles son las unidades de la resistividad eléctrica?
Ω
VA
W-m
Watts
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuáles son los materiales que presentan una repulsión a la aplicación de un campo magnético externo?
Diamagnéticos
Ferromagnéticos
Ferrimagnéticos
Paramagnéticos
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