Hearing the siren of an approaching fire truck, you pull over to the side of the road and stop. As the truck approaches, you hear a tone of 470 Hz ; as the truck recedes, you hear a tone of 400 Hz .Howmuch time will it take for the truck to get from your position to the fire 5.0 km away, assuming it maintainsa constant speed?

time = 182.68 s

Explanation:

given data

truck approaches = 470 Hz

truck recedes =  400 Hz

position away =  5.0 km

solution

if V is the speed of sound in air and v is the speed to truck

f is the frequency of sound

when truck approach

f1 =  

and when truck recede

f2 =  

so here we can say

  ...........1

v = 27.37 m/s

so here 5 km

S = u×t  + 0.5 ×a×t²  ...........2

5 × 10³ = 27.37 t + 0

t = 182.68 s

hi,

what occurs during a solar eclipse?

there are small tides across earth.

the moon is between earth and the sun.

p.s. im not sure if the first answer is correct because during a solar ecliphse there are spring tides and i dont know if they are the same.

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.