Trabajo y potencia mecánica
Quiz
•
Physics
•
11th Grade
•
Hard
Daniel Ramírez
Used 7+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
1 Joule es igual a
1 kg m/s
1 kg2m/s2
1 kg m2/s2
1 kg m/s2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Al objeto de la figura se le aplica una fuerza de 75N (que forma una ángulo de 35° respecto la horizontal). Calcula el trabajo necesario para moverlo 250 cm.
15 359.1 J
61.4 J
153.6 J
61400 J
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
1 Joule también equivale a
1 N s
1 N/m2
1 N/m
1 N m
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
El peso de un objeto es de 305 N, si fuerza es lo mismo que peso (F = mg) ¿Cuál es la masa del objeto?
305 kg
31.09 kg
0.032 kg
2992.05 kg
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Qué fuerza se requiere aplicar para mover un objeto 560 cm con un trabajo de 380 J?
67.8 N
136.2 N
2128 N
0.67 N
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Una grúa realiza un trabajo de 4300 J al levantar una carga. La potencia mecánica del motor es de 800 W. ¿Cuánto tarda en realizar ese trabajo?
18.6 segundos
1.3 minutos
5.3 segundos
34 segundos
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Qué trabajo en kJ realiza un foco de 80 W que permanece encendido durante 5 horas?
1 440 000 kJ
144000 kJ
0.1440 kJ
1440 kJ
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