1. Un examen
2. Una goma
3. Una maestra
4. Un profesor
5. Una mapa
I hope this helps!
Answer:
minimum speed to know if the whistle is working = 16.33m/s
Explanation:
Speed of sound, v= 343m/s
Hearing frequency of dog, f= 21kHz
Hearing Frequency of man, fₐ= 20kHz
Minimum travel speed, vₐ=?
Using the formula;
fₐ=(1-vₐ/v)f
20=(1-vₐ/343)21
(1-vₐ/343)=20/21
vₐ/343=1-0.9524
vₐ=0.0476*343
vₐ=16.33m/s
7. Si, lo voy a confirmar
8. Si, los hago ahora.
9. Una mujer
It should be " Qué edad tienes ? " (how old are you ?)
hope I helped
Froma.. if you're talking about a good physical
