EXAMEN DE ENERGÍA - BÁSICO
Quiz
•
Science
•
12th Grade
•
Practice Problem
•
Hard
Faustino HG
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Desde lo alto de un edificio cae una piedra de 2 kg en algún punto de la caída tiene una rapidez de 20 m/s , Hallar la energía cinética.
100 J
200 J
300 J
400 J
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Un arco de flecha se deforma 10 cm , la constante de rigidez del arco K = 400 N/m , hallar la energía potencial elástica.
1 J
2 J
3J
4 J
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Un bloque de 2 kg sobre una superficie inicia su movimiento desde el reposo hasta tener una rapidez de 20 m/s . Hallar el trabajo neto realizado :
100 J
200 J
300 J
400 J
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Un proyectil de 100 g se mueve con una velocidad de 100 m/s constante durante 4 segundos , hallar el trabajo neto.
0 J
100 J
20 J
10 J
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cual de las siguientes fuerzas es una fuerza no conservativa.
Fuerza de gravedad
Fuerza elastica
Fuerza electrica
Fuerza magnetica
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El trabajo de una fuerza conservativa en una trayectoria cerrada ( es decir ida y vuelta ) es :
CERO
CONSTANTE
INFINITO
NO SE PUEDE SABER
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El trabajo de una Fuerza NO conservativa depende de la trayectoria :
Verdadero
Falso
Cero
No se puede saber.
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