During a lightning storm, the sound of thunder reaches your ear 11 seconds after

Question

During a lightning storm, the sound of thunder reaches your ear 11 seconds after you see the lightning. How far away is the lightning strike 3.0 km 3.8 km 5.1 km 31 km None of the Above At a busy street corner, the sound level is 130 dB. What is the intensity of sound in W/m^2? 1 Times 10^1 1 Times 10^0 1 Times 10^-1 1 Times 10^-2 None of the Above What is the new sound level when 10 students are talking given that each talks at the 100 dB level? 105 dB 110 dB 112 dB 115 dB 150 dB The sound level measured 20 m from a jet plane is 120 dB. What is the sound level at 300 m? (Ignore reflections from the ground.) 130 dB 120 dB 96 dB 70 dB 1 dB

Explanation / Answer

18) B)3.8 km

apply, (t + 11)*v_sound = t*c

(t + 11)*340 = t*3*10^8

on sloving the above equation we get

t = 1.246668*10^-5 s

so, d = c*t

= 3*10^8*1.246668*10^-5

= 3740 m

= 3.74 km

close to 3.8 km

19) A) 1*10^1 W/m^2

20) B) 110 dB

21) C) 96 dB

Related Questions

Navigate

• Browse (All)
• Browse D
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.