The subway escalator moves evenly downward at a speed of 1.6 m / s. The passenger, on the other hand, relative to the escalator descends evenly downward at
Prove that the national liberation movement in the Netherlands contributed to the transformation of the newly created state into the most developed country in Europe. The Netherlands achieved
The melting point of lead is 327.5 ° C, and the boiling point is 1740 ° C. These indicators are relevant at standard atmospheric pressure. In thermodynamics, the
The ethane oxidation reaction is described by the following chemical reaction equation. 2C2H6 + 7O2 = 4CO2 + 6H2O; According to the coefficients of this equation, 7 oxygen