What’s the problem in your Spanish homework?
This sentences is grammatically incorrect because the action and the period of time are not coherent.
It is possible to say " trabajo en esa tienda hace dos años/meses" which would mean that you have been working in that store for a year or a month.
but the expresión "hace que"+ period of time does not exist.
Another possibility might be (if you been working there for only 2 hours) "Trabajo en esa tienda hace dos horas" It would mean that you recently started working there. <span />
Answer:
papa西班牙语 this is a answer
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
