Answer:
C) 20 m/s
Explanation:
The collision of the car and truck will give a single resultant velocity due to equal masses.
We'll treat this question as a vector question.
The velocity profile will form a right angle triangle.
To calculate the velocity of the car
Let the velocity be x
Sina = x/28
Sin46= x/28
0.7193*28 = x
20 = x
X = 20 m/s
To answer the question above,
First, let's determine the speed of sound under the water.
S
peed of sound in water at 20oC = 1482m/s
<span>So λ = v/f = 1482m/s/(100kHz) I'm assuming your frequency is 100kHz </span>
<span>So λ would be = 0.0148m
I hope my answer helped you.</span>
This is known as Wien's Law:
The relationship is:
wavelength = 0.0029/temperature
It is an inversely proportional relationship.
to make sure the argument is true and correct backed up by logic.
