a change in color
a change in frequency
a change in speed
Answer: The correct answer is - change in speed.
When light travels from one transparent medium to another transparent medium, it bends and this phenomenon is known as refraction.
It is caused due to difference in the speed of light in different medium as speed of light is slow in a denser medium (like water) whereas speed is faster in a lighter medium (like air).
Answer:
2.7N
Explanation:
0.9 m/s
B.
110 m/s
C.
110 m/s²
D.
1.1 m/s²
Answer
Average accleration is 1.1 m/s² .
Option (D) is correct .
Explanation:
Formula
As given
An Olympic sprinter can go from a state of rest to 11 meters per second in 10 seconds.
Putting all the values in the formula
Average accleration = 1.1 meter per second²
Therefore Average accleration is 1.1 m/s² .
Option (D) is correct .
b. Explain why the two recordings would sound different after being replayed 100 times.
Answer:
can u help me with this too, i currently have it in an assignment and i dont know the answer
Explanation:
Analog signals physically degrade each time they are played, causing a decrease in sound quality. Digital signals, however, will not experience any quality decline when being replayed multiple times because they are stored in binary form.
a. After being replayed 100 times, a major difference that Evelyn would most likely hear between the two recordings is that the analog recordings might have a loss in sound quality, and are likely to sound a bit more worn down or degraded. The digital recording, on the other hand, would sound just as it did the first time, having a high quality, and no loss of detail.
b. The reason for the difference in degradation is largely because of the nature of the two types of signals. An Analog signal is continuous and is an accurate representation of the sound wave as it varies in amplitude over time. However, an analog recording such as a tape, physically degrades each time it is played. Noise begins to rise while a decline in high-frequency content seems to appear. Digital signals, which are quantized representations of those same sound waves, do not degrade over time, because information is essentially coded in binary form. So, unless the file itself is damaged or corrupted, playing it back any number of times won't diminish its quality.
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The period of simple harmonic motion remains unchanged when the mass of the object is doubled.
Simple harmonic motion (SHM) is a type of periodic motion where an object oscillates back and forth around a fixed point in a regular and repeated manner. It is a special case of periodic motion, characterized by a restoring force that is proportional to the displacement from the equilibrium position. The classic example of SHM is a mass-spring system, where a mass is attached to a spring and is subjected to a restoring force proportional to the displacement from its rest position.
In SHM, the motion is always sinusoidal and the period of the motion is constant, which means that the time for one complete cycle of the motion remains the same. This type of motion is important in a variety of physical systems, including the vibration of mechanical systems, the oscillations of electrical circuits, and the motion of particles in a gravitational field.
Learn more about simple harmonic motion, here:
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