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Answer:
Now that you know how forces affect the motions of objects, you can use the Tracker video analysis tool to create dynamic models
for a wide range of physical situations.
Tracker enables you to create two different types of mathematical models: analytical and dynamic. An analytical model enables you
to enter mathematical expressions for x and y positions as a function of time. That's sometimes useful, but from a physics
perspective, a dynamic model is much more flexible and powerful.
A dynamic model enables you to set the initial conditions for a particular system (Initial positions and velocities); then you can
mathematically define any forces acting on that system. Once those are set up, the model acts like an object in space, responding to
the forces you've imposed on it. It can continue moving forever, if that's what the forces would do to an object in real life. By visually
matching a marker for your model to the real motion on the video, you can define and refine a mathematical model for a
Answer:
1.3.
Explanation:
From the question given above, the following data were obtained:
Sine of incident angle (Sine i) = 0.217
Sine of refracted angle (Sine r) = 0.173
Refractive index (n) =?
From snell's law, the Refractive index is simply defined as the ratio of the sine of the incident angle to sine of the refracted angle. Mathematically, it is expressed as:
Refractive index = Sine of incident angle / sine of refracted angle
n = Sine i / Sine r
With the above formula, we can obtain index of refraction as shown below:
Sine of incident angle (Sine i) = 0.217
Sine of refracted angle (Sine r) = 0.173
Refractive index (n) =?
n = Sine i / Sine r
n = 0.217 / 0.173
n = 1.3
Thus, the index of refraction is 1.3.
Answer:
Explanation:
<u>Given:</u>
No. of times = 600 times
Time = 60 seconds
<u>Required:</u>
Frequency = f = ?
Time Period = T = ?
<u>Solution:</u>
<h2>Frequency = No. of Times / Time</h2>
Frequency = 600 / 60
<u>Frequency = 10 Hz</u>
<h2>Time Period = 1 / Frequency</h2>
Time Period = 1 / 10
<u>Time Period = 0.1 secs</u>
Data:
Vo = 120 ft / s
α = 30°
t = 5 s
x = ?
Formulas:
cos(α) = Vo,x / Vo => Vo,x = Vo * cos(α)
x = Vo,x * t
Calculations:
Vo,x = 120 ft / s * cos(30) = 103.92 ft /s
x = 103.92 ft/s * 5 s = 519.6 ft
Answer: 519.6 ft
