Answer:
d = 4180.3m
wavelengt of sound is 0.251m
Explanation:
Given that
frequency of the sound is 5920 Hz
v=1485m/s
t=5.63s
let d represent distance from the vessel to the ocean bottom.
an echo travels a distance equivalent to 2d, that is to and fro after it reflects from the obstacle.


wavelengt of sound is
= v/f
= (1485)/(5920)
= 0.251 m
Answer:
The location of the survey is biased.
Explanation:
If someone left a movie theater, it is most likely because he likes watching movies there. A better place to interview would be on the streets, as it’s less biased there
Answer:
Explanation:
The acceleration of the ball would be due to the downward force of gravity, 9.8m/s^2. In order to find the displacement given that interval of time, you have to use the corresponding kinematic formula:

The initial velocity was given, the time was given, and the acceleration was given. Therefore:


To find the required time given a desired final velocity, we can use:




Answer:
The value is 
Explanation:
Generally the thermal efficiency is mathematically represented as

substituting [ 627°C + 273 = 900K ] for
and [ 90°C + 273 = 333K ] for 
So

=> 
False, when wavelength waves increases the frequency will decreases.