1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
goldfiish [28.3K]
2 years ago
11

Help meh in this question plzzz ​

Physics
1 answer:
iragen [17]2 years ago
5 0

The Moment of Inertia of the Disc is represented by I = \frac{15}{32}\cdot M\cdot R^{2}. (Correct answer: A)

Let suppose that the Disk is a Rigid Body whose mass is uniformly distributed. The Moment of Inertia of the element is equal to the Moment of Inertia of the entire Disk minus the Moment of Inertia of the Hole, that is to say:

I = I_{D} - I_{H} (1)

Where:

  • I_{D} - Moment of inertia of the Disk.
  • I_{H} - Moment of inertia of the Hole.

Then, this formula is expanded as follows:

I = \frac{1}{2}\cdot M\cdot R^{2} - \frac{1}{2}\cdot m\cdot \left(\frac{1}{2}\cdot R^{2} \right) (1b)

Dimensionally speaking, Mass is directly proportional to the square of the Radius, then we derive the following expression for the Mass removed by the Hole (m):

\frac{m}{M} = \frac{R^{2}}{4\cdot R^{2}}

m = \frac{1}{2}\cdot M

And the resulting equation is:

I = \frac{1}{2}\cdot M\cdot R^{2} -\frac{1}{2}\cdot \left(\frac{1}{4}\cdot M \right) \cdot \left(\frac{1}{4}\cdot R^{2} \right)

I = \frac{1}{2} \cdot M\cdot R^{2} - \frac{1}{32}\cdot M\cdot R^{2}

I = \frac{15}{32}\cdot M\cdot R^{2}

The moment of inertia of the Disc is represented by I = \frac{15}{32}\cdot M\cdot R^{2}. (Correct answer: A)

Please see this question related to Moments of Inertia: brainly.com/question/15246709

You might be interested in
You measure an angle of 21. 1 when the light passes through a grating with 610 lines per mm. what is the wavelength of the light
weqwewe [10]

The wavelength of the light is 590nm

wavelength of the light=λ

Given,

The equation for a diffraction grating to use here is dsinθ = mλ

d=1/610 lines per mm=1.639*10^{-6}, m=1, θ=21.1^{0}

λ=1.639*10^{-6} * sin21.1^{0}/1 =590nm

<h3>Wavelength </h3>

The wavelength, which in physics refers to the length over which a periodic wave repeats, is its spatial period. It is the distance between two successive corresponding wave points of the same phase, such as two neighbouring crests, troughs, or zero crossings, and it is a feature of both travelling waves and standing waves, as well as other spatial wave patterns. The spatial frequency is defined as the wavelength's inverse. The Greek letter lambda, or "wavelength," is frequently used to represent it. Additionally, sinusoidal wave envelopes, modulated waves, and waves created by the interference of several sinusoids are also commonly referred to as having a wavelength.

You measure an angle of 21. 1 when the light passes through a grating with 610 lines per mm. what is the wavelength of the light?

Learn more about wavelength here:

brainly.com/question/13533093

#SPJ4

4 0
1 year ago
at 1 p.m. a car traveling at a constant velocity of 78 km per hour towards the West it's 34 km to the west of our school how far
Fittoniya [83]

83 km/h * 2.5 hours (3:30 - 1:00) = 207.5 km  

207.5 km - 15 km = 192.5 km

3 0
3 years ago
Which wave has a disturbance that is parallel to the wave motion?
Rashid [163]
<h3><u>Answer;</u></h3>

D. Longitudinal waves

<h3><u>Explanation;</u></h3>
  • A wave is a transmission of a disturbance from one point to another. It involves the transmission of energy from a source to other points.
  • <em><u>Waves may classified as longitudinal waves or transverse waves depending on the vibration of particles relative to the wave motion.</u></em>
  • <em><u>Longitudinal waves are waves in which the vibration of particles is parallel to the direction of the wave motion, while transverse wave are types of waves in which the vibration of particles is perpendicular to the wave motion.</u></em>
  • Longitudinal waves creates regions of compressions and rarefactions, while transverse waves creates regions of maximum displacement called crests and troughs
3 0
2 years ago
Read 2 more answers
Which person will experience what happens to sounds due to the Doppler effect?
horsena [70]

Answer:

4

Explanation:

as toddler will go away then come closer

6 0
2 years ago
What is the mass of a bowling ball if it has a weight of 80N?
Artist 52 [7]
8.1577297 Kilograms :)
8 0
3 years ago
Read 2 more answers
Other questions:
  • A 15kg beam that is 10m long is placed on a fulcrum that is 3m from the end an 80kg person sits at the end closer to the fulcrum
    7·1 answer
  • Which is described as the flow of charge particles?
    14·1 answer
  • When a water wave runs into you at the beach, what causes you to get knocked down?
    9·1 answer
  • A Honda Civic and an 18 wheeler approach a right angle intersection and then collide. After the collision, they become interlock
    10·1 answer
  • How do the four rocky planets comapre to the four gas giants in size?
    14·2 answers
  • A cheetah ran 300 feet in 2.92 seconds. What was the cheetah’s average speed in miles per hour?
    5·1 answer
  • Which type of graph would be best for showing the percentage of people in a
    11·2 answers
  • Which of these is NOT one of the 3 Bs of light you learned about in this lesson?
    13·1 answer
  • Revolution: One orit of an object in space around another_ days?​
    6·2 answers
  • How is newton’s first law of motion used for a person in a stationary car during a car crash
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!