The final object will move with a speed of 1.9 x 10⁻² m/s.
According to the law of conservation of momentum, when two objects meet in a closed system, the sum of their momentums before and after the collision is constant.
Here,
Initial velocity of the bullet, u = 100 m/s
Mass of the bullet, m = 15 g = 0.015 kg
Mass of the object, M = 75 kg
Total momentum before collision, P₁ = mu + (M x 0)
P₁ = 0.015 x 100
P₁ = 1.5 Kgm/s
Total momentum after collision, P₂ = (m + M)v
P₂ = (0.015 + 75)v
P₂ = 75.015 v
According to law of conservation of momentum,
P₁ = P₂
1.5 = 75.015 v
Therefore, the speed with which the final object moves,
v = 1.5/75.015
v = 1.9 x 10⁻² m/s
Hence,
The final object will move with a speed of 1.9 x 10⁻² m/s.
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Answer:
Sublimation and melting
Explanation:
The slope of a position vs time graph represents the average velocity of the object. The velocity corresponds to the rate of change in the object's position over time. Further analysis reveals that the slope of a velocity vs. time graph signifies the object's acceleration.
In the context of physics, when analyzing a position versus time graph, the slope represents the object's average velocity. The slope is calculated as the rise over run. Rise is the change in position, or displacement, and run is the change in time. For example, Figure 3.9 shows the position (x(t)) versus time graph. The slopes of the tangent lines at specific times (0.25s, 0.5s, and 1s) indicate the object's velocity at the corresponding times. Therefore, the slope of a position vs time graph equals the velocity of the object.
Further analysis of a velocity versus time graph would then show that its slope represents the object's acceleration. This highlights the direct relationship between position, velocity, and acceleration in motion physics.
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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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B. Athletic ability
C. Number of teeth
D. Shape of earlobes
Genes determine the physical traits and functions of the organism. But some characteristics are influenced by the environment. Option B, Athletic ability.
Genes are the hereditable DNA fragments that transmit the information needed to specify traits. This information passes from parents to offspring, generation to generation.
Genes are physically placed and arranged in the chromosomes. Each chromosome contains too many genes that might vary in length.
Geneslength depends on the pairs of bases composing them. These sequences vary in number, producing genes of different lengths.
Genes code for proteins. Proteins create the organism tissues and perform or carry out specific functions in the organisms, controlling almost all processes and chemical reactions.
According to this information, we can assume that genes are involved in determining the person's Eye color, Number of teeth, and Shape of earlobes.
Athletic ability is also influenced by the environment. Genes might be involved in the physical traits that lead a person to be athletic or not (such as muscles or strength). But the enviroment plays a significant role in determing if the person has the athletic ability or not.
Option B. Athletic ability
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B. 2.2 m/s^2
C. 4.5 m/s2
D. 3.3 m/s^2
The acceleration of the sled is 2.2 m/s^2.
To determine the acceleration of the sled, we can use Newton's second law of motion which states that the net force acting on an object is equal to the mass of the object multiplied by its acceleration: F = m * a. Rearranging the formula, we have a = F / m. Plugging in the given values, we get a = 540 N / 250 kg = 2.16 m/s2. Therefore, the correct answer is B. 2.2 m/s2.
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both vacuums and mediums
mediums only
mediums only, mechanical waves always propagate through medium