
UNI 25/03
Quiz
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Hard
Julio Sug
Used 2+ times
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16 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
25
24
23
22
21
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El cardinal de la intersección de 2 conjuntos disjuntos es igual a:
0
1
2
3
4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El promedio de 6 números es 82. Si consideramos un séptimo número, el promedio aumenta en 18. ¿Cuál es el número agregado?
A) 200
B) 205
C) 208
D) 209
E) 210
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. ) Se quiere obtener 60 kg de café de 1,5 soles el kg mezclando cantidades convenientes de 1,8 soles el kg y de 1,3 soles el kg. ¿Qué cantidades se debe usar de cada uno?
A) 20 y 40
B) 15 y 45
C) 33 y 27
D) 12 y 48
E) 24 y 36
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Una piedra es lanzada con una inclinación de 60° y una velocidad inicial de 40 m/s. ¿Al cabo de qué tiempo se encontrará en un plano horizontal que contiene al punto de lanzamiento? (g = 9,8 m/s2)
A) 7,61
B) 6,17
C) 6,71
D) 7,06
E) 6,81
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Una polea de radio 0,5 m está girando a la velocidad angular de 120 rpm. La velocidad lineal (en m/s) de un punto periférico de la polea es igual a:
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