Question

Определите, на каком расстоянии от наблюдателя ударила молния, если он услышал гром через 3 с после того, как увидел молнию (скорость распространения света 300000 км/с , скорость звука340м/с)

Answer 1

2 урока назад была эта задача на самостоятельной (5).
В воздухе при нормальных условиях скорость звука равна 330 м/с.
Значит молния ударила на расстояние: 330*3=990 м
Ответ: на расстояние 990 м от наблюдателя ударила молния.

Answer 2

Calculation of the Distance of Lightning Strike

To determine the distance at which the lightning struck from the observer, we need to consider the time delay between seeing the lightning and hearing the thunder.

Given: - Speed of light = 300,000 km/s - Speed of sound = 340 m/s

The time delay between seeing the lightning and hearing the thunder is 3 seconds.

We can calculate the distance using the formula:

Distance = Speed x Time

First, let's convert the speed of sound from meters per second to kilometers per second:

Speed of sound = 340 m/s = 0.34 km/s

Now, we can calculate the distance:

Distance = Speed of sound x Time

Distance = 0.34 km/s x 3 s

Distance = 1.02 km

Therefore, the lightning struck approximately 1.02 kilometers away from the observer.

Please note that the accuracy of this calculation depends on the assumption that the speed of sound is constant throughout the entire distance. Additionally, this calculation assumes that the observer is stationary and that there are no other factors affecting the speed of sound or the perception of the lightning and thunder.