A man hears his echo from a nearby hill 2s after he shout...
A man hears his echo from a nearby hill 2s after he shouted. If the frequency of his voice is 260Hz and the wavelength is 1.29m, how far away is the hill?
330.0m
335.4m
660.0m
670.8m
Correct answer is B
Recall V = F × \(\lambda\)
= 260 × 1.29
= 335.4ms\(^{-1}\)
Echo time = \(\frac{2}{2}\) = 1 sec
Distance = v x t = 335.4 x 1
= 335.4m
Which of the following electromagnetic waves has the shortest wavelength? ...
The primary aim in high tension transmission is to ...
The charge carriers in gasses are ...
The quantity of heat needed to raise the temperature of a body by 1K is the body's ...
The material used for constructing the core of an electromagnet is ...
When compared with water, mercury is preferred as a thermometric liquid because ...
A force of 500N1 is applied to a steel wire of cross-sectional area 0.2m2, The tensile stress is...