“A rule of thumb for estimating the distance in kilometers between an observer and a lightning stroke is to divide the number of seconds in

Question

“A rule of thumb for estimating the distance in kilometers between an observer and a lightning stroke is to divide the number of seconds in the interval between the flash and the sound by 3. Is this rule correct? 1. No; the speed of sound varies rapidly with altitude. 2. Yes; the speed of light is much greater than the speed of sound. 3. Yes; the sound waves are longitudinal waves. 4. No; the speed of light must be considered in this problem”.

in progress 0
Acacia 5 years 2021-08-31T09:00:03+00:00 1 Answers 96 views 0

Answers ( )

  1. quangkhai
    -1
    2021-08-31T09:01:10+00:00
    Reply

    Option 1 is correct option .

    Explanation:

    The velocity of sound depends upon temperature . The temperature is different at different altitudes .

    The velocity of sound has no effect of pressure . Thus at  different altitudes , if pressure is different , it makes no difference .

    Therefore the speed of sound varies rapidly with altitude , due to variation of temperature .

    It also depends on the nature of medium . which also varies with altitude .

    Moreover we cannot get distance by dividing time interval with 3 .

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )