Answer:
The factor by which the amplitude would change is k = 0.336
Explanation:
From the question we are told that
The distance away from the observer is
The new position of the observer is
Generally amplitude is inversely proportional to distance
Let A denote the amplitude of the sound at d
So
Now the amplitude at a distance 62 ft from the speaker can be mathematically represented as
substituting values
so the factor by which the amplitude would change is k = 0.336
Answer: An object at rest has zero velocity - and (in the absence of an unbalanced force) will remain with a zero velocity. Such an object will not change its state of motion.
Explanation: I hoped that helped!!
The speed of the star is 255 km/s
Explanation:
The kinetic energy of a body is the energy possessed by the body due to its motion. Mathematically:
where
m is the mass of the object
v is its speed
For the star in this problem, we have:
is the mass
is the kinetic energy
Therefore, the speed of the star is:
Which corresponds to 255 km/s
Learn more about kinetic energy:
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Answer:
C . All of the different types of electromagnetic waves