Question

Please send the answers i want only the answers no need for explanations since i have no time my father gave me this work please send fast. Leave your work and send this pleaseeee i request. You give screenshot give anything just give correct answer. I am offering you 50 pts of my 100 pts​

Answer 1

Answer:

I) 1/250 second

2) 1/0.015 = 666.666hz

3)17.2 m

Answer 2

Explanation:

frequency = 1 / time period

250 = 1 / time period

time period = 1 / 250

time period = 0.004 seconds.

Frequency = 1/0.015 = 66.666

The minimum distance the obstacle needs to be at to hear an echo is 17 meters.