The number that is not like the others is 16. All of the other numbers are divisible by 3. (21/3 = 7, 15/3 = 5, 6/3 = 2, 27/3 = 9)
The answer is #1 because está is conjugated in the él/ella/usted form and it should be in yo form.
Answer:
- <u>Translated from Portuguese language:</u>
"The gaseous coal is then burned in a gas turbine cycle and part of the residual heat from the exhaust gases is recovered to generate steam for the steam turbine. Currently, the construction of such plants costs about $ 1500 per kW, but their efficiency is about 45%. The average calorific value of coal is about 28,000,000 k J per ton (that is, 28,000,000 k J of heat released when 1 ton of coal is burned). If the mill is to recover its cost difference in five years from fuel savings, determine what the price of coal should be in $ per ton?"
Explanation:
- The price of coal will be around 37 $ per ton. As, a source of energy the coal is more involved in the different industrial and mechanical processes and increases the level of efficiency of different machines by providing a more unique way to obtain greater results.
Responder:
14,7 m / s
7,35 m / s
Explicación:
La velocidad inicial, u
Usando la relación:
v = u + en
a = - 9,8 (aceleración debido a la gravedad) hacia arriba
t = 1,5 segundos (tiempo necesario para alcanzar el máximo. Altura)
v = 0; velocidad final a máxima altura
Por eso,
0 = u - 9,8t
0 = u - 9,8 * 1,5
0 = u - 14,7
u = 14,7 m / s
Velocidad media :
Distancia recorrida / tiempo transcurrido
Distancia viajada :
v² = u² + 2aS
0 = 14,7 ^ 2 + 2 (-9,8) * S
0 = 216,09 - 19,6 S
19,6 S = 216,09
S = 216,09 / 19,6
S = 11,025
Arriba y abajo: 11.025 * 2 = 22.05
Velocidad media en todo:
S t
22.05 / 3
= 7,35 m / s
