While on a hike, a pair of friends get caught in a thunderstorm. four seconds after seeing the flash of a distant lightning strike, they hear the thunder. how far away was this lightning strike in miles? note: sound, in air, travels at 340 m/s.

1360 m

Explanation:

Time taken for the thunder to travel the distance to the hikers = 4 seconds

Speed of the thunder = 340 m/s

Speed of light = 3×10⁸ m/s

It can be seen that the speed of light is substantially faster than the speed of sound. This is the reason why there is a delay in seeing the lightning and hearing the thunder.

Distance = Speed × Time

Hence, the lightning strike was 1360 m away from the hikers

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.

conservation of mass

mass before something happens = mass afterwards