physics

posted by .

when lightning strikes you can see it at a speed of 3x10^8m/s. But you hear thunder at about 340m/s in 70 degrees air temperature. a) If you are a mile away from lightning, how long of a delay is there?
b) if the delay between the lightning and thunder were 1s how far away would you be in km and in miles?

a) I used d=d_0+v_0t+1/2at^2
which becomes d=v_0t
1609.34=340t
t=4.73s
b) d=v_0t
d=3x10^8 m/s(1s)
d=3x10^8m
=18641.14mi
=300,000 km

But this doesn't make any sense. Did i do something wrong?

  • physics -

    In part b you used the speed of light for Vo but its the speed of sound that determines how long it takes to hear it.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    The activity series is : Potassium Soduim Calcium Magnesuim Aluminiuim Zinc Iron Lead Copper Silver Gold Am I right ?
  2. Physics

    suppose that you wish to determine how far away from your position lightning has struck. the thunder that results from lightning expands outward in all directions at a constant speed (you may assume 343 m/s at 20C). when counting seconds …
  3. physics

    you see lightning and then count 4 seconds till you hear the thunder. From this you conclude that the lightning strike occurred_______ a. 1400m away b. 700m away c. none of the above Can you please show me how to figure out how to …
  4. Physics

    how many seconds will elapse between seeing lightning and hearing the thunder if the lightning strikes miles away and the temperature is 100.0 degrees F?
  5. Physics

    How many seconds will elapse between seeing lightning and hearing the thunder if the lightning strikes 2 mi away and the temperature is 100 degree F?
  6. Physics

    lightning strikes a tower 4 km away. how long after the strike will you hear the thunder?
  7. physics

    You can estimate your distance from a lightning storm by watching for a lightning flash and then counting in one-second intervals using the general rule that you are 1 km away for every 3 s you count. Explain why this rule works. Estimate …
  8. physics

    You can estimate your distance from a lightning storm by watching for a lightning flash and then counting in one-second intervals using the general rule that you are 1 km away for every 3 s you count. Explain why this rule works. Estimate …
  9. math

    There is proportional relationship between your distance from a thunderstorm and the time from when you see lightning and hear thunder. If there are 9 seconds between lightning and thunder, the storm is about 3 kilometers away. If …
  10. math

    There is a proportional relationship between your distance from a thunderstorm and the time from when you see the lightning and hear the thunder. If there are 9 seconds between the lightning and thunder, the storm is about 3 kilometers …

More Similar Questions