Young's Modulus refers to changes in the a Volume b- Length c- Body layers
1 answer:
Explanation:
Young' modulus is the ratio of normal stress to the longitudinal strain. Mathematically, it is given by :
Normal stress is given by force per unit area. Longitudinal strain is the change in length per unit original length.
The mathematical definition of Young's modulus is given by :
..........(1)
Where
is the change in length
F is the force
A is the area of cross section
So, the Young's modulus refers to the change in length of the object. Hence, the correct option is (b) "length".
You might be interested in
Answer:
The frequencies that the listener at P will hear a maximum intensity are: 85.75 Hz, 171.5 Hz, 257.25 Hz and 343 Hz.
Explanation:
Path Difference Δx is given as: nλ
where λ =
Δx can be re-written as: n×
where;
n = integer
v = speed of sound = 343 m/s
f = frequency
Δx = 19.0 m - 15.0 m
Δx = 4.0 m
f =
f = n × 85.75 Hz
Now; n = 1, 2, 3, 4 ; the frequencies that the listener at P will hear the maximum intensity will be
when n= 1
f = 1 × 85.75 Hz
f = 85.75 Hz
when n= 2
f = 2 × 85.75 Hz
f = 171.5 Hz
when n= 3
f = 3 × 85.75 Hz
f = 257.25 Hz
when n= 4
f = 4 × 85.75 Hz
f = 343 Hz
∴ the frequencies that the listener at P will hear the maximum intensity will be : 85.75 Hz, 171.5 Hz, 257.25 Hz and 343 Hz for n =1,2,3, and 4 respectively.