2. in a thunderstorm at 20.0°c, karen sees a bolt of lightning and hears the thunderclap 3.00 s later. how far from karen did the lightning strike? show your work.

i don't want answer just the formula on how to solve it. you!

1029 m

In a thunderstorm the thunderclap is always heard after some seconds of lightning because speed of light and speed of sound is different in the air though these both incident took place at the same time.

Sound in air travels at approximately 343 m/s at 20°C

The speed of light in air is to 3 x 10⁸ m/s at 20°C

Formula to use

distance = speed x time

              = 3 x 343

              = 1029 m

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue