Question

4.1. Загальна потужність двигунів літака становить 15 МВт. Визнач силу опору руху, якщо літак рухається рівномірно зі швидкістю 720 км/год. Яку роботу виконають двигуни літака за 0,5 год руху?

Answer 1

Ответ:

Объяснение:

N=15 МВт;

V=720 км/год=200 м/c;

t=0,5 год=1800 c;

F ,   A   ?   F=N/V=15*10⁶/200=75000 H;  A=N*t=15*10⁶*1800=2,7*10¹⁰ Дж

Answer 2

To determine the resistance force experienced by the aircraft, we can use the formula:

Resistance Force = Power / Velocity

Given that the power of the aircraft's engines is 15 MW (megawatts) and the velocity is 720 km/h (kilometers per hour), we can calculate the resistance force as follows:

Resistance Force = 15 MW / 720 km/h

To perform this calculation, we need to convert the power from megawatts to watts and the velocity from kilometers per hour to meters per second, as the SI units are required for consistent calculations.

Converting 15 MW to watts: 1 MW = 1,000,000 watts 15 MW = 15,000,000 watts

Converting 720 km/h to m/s: 1 km = 1,000 m 1 hour = 3,600 seconds 720 km/h = (720,000 m) / (3,600 s) = 200 m/s

Now we can calculate the resistance force:

Resistance Force = 15,000,000 watts / 200 m/s

Calculating this value gives us the resistance force experienced by the aircraft.

Please note that the given information does not provide any additional details about the aircraft or the specific conditions of the flight. The calculation assumes that the resistance force is solely due to air resistance and does not take into account other factors such as altitude, temperature, or wind speed.