Answer:
Steel is mostly composed of iron and carbon. It contains small amounts of manganese and even smaller amounts of silicon, phosphorous, oxygen, sulfur, and other elements.
...
Density of Steel.
carbon steel - 7.86
stainless steel - 7.9
Constructive interference of two coherent waves will occur if the path difference is λ/2.
<h3>Constructive interference:</h3>
When two waves are in phase and their maxima add, a process known as constructive interference occurs where the combined amplitude of the two waves equals the sum of their individual amplitudes.
The resultant wave is created by adding the amplitudes of two waves that are in phase and traveling in the same direction. The waves in this instance are said to have experienced beneficial interference. The upward displacement of the medium is higher than the displacement of the two interfering pulses because upward displacement occurs when the waves experience constructive interference. When the phase difference between the waves is an even multiple of (180°), constructive interference happens.
Learn more about constructive interference here:
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The working equation for this problem is written below:
x = v₀t + 0.5at², where x is the distance traveled, v₀ is the initial velocity, a is the acceleration and t is the time
Let's apply the concept of calculus. The maximum speed is equated to the derivative of x with respect to t.
dx/dt = 8 ft/s = v₀ + at
Since the it starts from rest, v₀ = 0
8 = at
t = 8/a
The net acceleration is 0.7 - 0.35 = 0.35 ft/s². Thus,
t = 8/0.35 = 22.86 seconds
Answer:
It will take t = 2.16 [s]
Explanation:
In order to solve this problem, we must find the final speed of the object when it is on the floor. The only way is to use the principle of energy conservation which tells us that potential energy can be transformed into kinetic energy and vice versa.
Now we can find the velocity
v² = 2*g*h
v = √2*9.81*23
v = 21.24 [m/s]
Now using the following equation:
where:
Vf = final velocity = 21.24 [m/s]
Vo = initial velocity = 0
g = gravity acceleration = 9.81 [m/s²]
t = time [s]
21.24 = 0 + (9.81*t)
t = 2.16 [s]
