Trabajo - Energía y Potencia
Quiz
•
Physics
•
10th Grade
•
Practice Problem
•
Medium
Luis Evelio Alfaro
Used 44+ times
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37 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Calcula la energía cinética de un vehículo de 10 kg de masa que circula a una velocidad de 120 km/h.
2545 J
5544 J
6985 J
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Un escalador con una masa de 60 kg invierte 30s en escalar una pared de 10m de altura. El trabajo que realiza es de ___ y lo realiza con una potencia de ___.
5880 J y 196 W
-5880 J y 19.6 W
5880 J y 176400 W
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La energía cinética está asociada a ____.
Configuración
Eficiencia
Movimiento
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La energía potencial se compone de la energía _______ y ____________.
Cinética y gravitacional
Gravitacional y elástica
Gravitacional y térmica
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Un carro de 150 kg viaja a velocidad de 25 m/s. Si el auto reduce su velocidad hasta 8.3 m/s. El trabajo que realizo fue de _____.
-41708.2 J
-20316.7
20316.7
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
En ausencia de fuerzas disipativas, la energía mecánica ni aumenta ni disminuye sino que permanece constante. Esta premisa le pertenece a ____.
Principio de conservación
Teorema de energía trabajo
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Un ladrillo de 1.2 kg esta suspendido a 2m de distancia por encima de un pozo. El fondo del pozo esta 3m por debajo del nivel de la calle. En relación con la calle, ¿cual es la energía potencial del ladrillo en cada uno de esos lugares?
-23.5 J y 35.3 J
-23.5 J y -35.3 J
23.5 J y -35.3 J
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