Answer:
Step-by-step explanation:
La energía mecánica total está dada por:
En donde:
m: es la masa = 150 g
v: es la velocidad = 0.8 m/s
h: es la altura = 25 m
g: es la gravedad = 9.81 m/s²
Por lo tanto, la energía mecánica total es 36.84 J.
Espero que te sea de utilidad!
Answer:
The number of people needed is
Step-by-step explanation:
From the question we are told that
The population proportion is
The margin of error is
From the question we are told the confidence level is 90% , hence the level of significance is
=>
Generally from the normal distribution table the critical value of is
Generally the sample size is mathematically represented as
=>
=>