Question

Летчику необходимо знать, каким запасом кислорода он должен быть обеспечен навысоте 3 000 метров. Для этого нужноопределить атмосферное давление на этойвысоте. Вычисли атмосферное давление наэтой высоте, если у поверхности Земли оноровно 760 мм ртутного столба.471,3 мм ртутного столба474,3 мм ртутного столба500 мм ртутного столба472 мм ртутного столба​

Answer 1

Ответ:

474,3

Объяснение:

проверено в билим ленде

Answer 2

To determine the atmospheric pressure at an altitude of 3,000 meters, we need to consider the relationship between atmospheric pressure and altitude. As altitude increases, atmospheric pressure decreases.

At sea level, the atmospheric pressure is typically around 760 mmHg (millimeters of mercury). This value is often used as a reference point for atmospheric pressure measurements.

To calculate the atmospheric pressure at an altitude of 3,000 meters, we can use the barometric formula, which relates atmospheric pressure to altitude. The formula is as follows:

P = P0 * (1 - (L * h) / T0) ^ (g / (R * L))

Where: - P is the atmospheric pressure at the given altitude - P0 is the atmospheric pressure at sea level (760 mmHg in this case) - L is the temperature lapse rate (change in temperature with altitude) - h is the altitude (3,000 meters in this case) - T0 is the standard temperature at sea level (usually 288.15 K) - g is the acceleration due to gravity (approximately 9.8 m/s^2) - R is the gas constant for air (approximately 8.314 J/(mol·K))

Unfortunately, the temperature lapse rate is not provided in the question. Without this information, it is not possible to calculate the exact atmospheric pressure at an altitude of 3,000 meters.

However, we can make an approximation assuming a standard temperature lapse rate of 6.5 °C per kilometer. Using this approximation, we can calculate the atmospheric pressure at 3,000 meters.

Calculation:

- P0 = 760 mmHg (given) - L = 6.5 °C/km (standard temperature lapse rate) - h = 3,000 meters (given) - T0 = 288.15 K (standard temperature at sea level) - g = 9.8 m/s^2 (acceleration due to gravity) - R = 8.314 J/(mol·K) (gas constant for air)

Using the barometric formula, we can calculate the atmospheric pressure at 3,000 meters:

P = 760 * (1 - (6.5 * 3) / 288.15) ^ (9.8 / (8.314 * 6.5))

Calculating this expression gives us an approximate atmospheric pressure at 3,000 meters.

Please note that this is an approximation, and the actual atmospheric pressure at 3,000 meters may vary depending on various factors such as temperature, weather conditions, and location.