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
faltersainse [42]
3 years ago
11

A circular disk of radius 2.0 m rotates, starting from rest, with a constant angular acceleration of 20.0 rad/s2 . What is the t

angential acceleration of a point on the edge of the disk at the instant that its angular speed is 1.0 rev/s
Physics
1 answer:
aleksandr82 [10.1K]3 years ago
6 0

Answer:

  a = 40 m / s²

Explanation:

This is a kinematics problem, where we must use both linear and angular and the relationship between them

we'll eat by reducing the angular velocity to units if

      w = 1.0 rev / s (2pi rad / 1 rev) = 2pi rad / s

they ask us for linear acceleration, we use the relationships between linear or angular variables

       a = α R

       a = 20  2

       a = 40 m / s²

You might be interested in
Use Eq. cosϕ=R/Z to show that the average power delivered by the source in an L−R−C series circuit is given by Pav = I^2rmsR .
Evgen [1.6K]

Answer:

Explanation:

In a L C R circuit, the average power is given by

P_{av}=V_{rms}I_{rms}Cos\phi

As given in the question

CosФ = R / Z

And we know that

V_{rms}=I_{rms}\times Z

So

P_{av}=I_{rms}\times Z\times I_{rms}\times \frac{R}{Z}

P_{av}=I_{rms}^{2}\times R

6 0
3 years ago
Identify the positive and negative about trade blocs.
ohaa [14]

Answer:

if this is on odyssey ware then i can edit my answer to help you

Explanation:

5 0
3 years ago
A car travels up a hill at a constant speed of 38 km/h and returns down the hill at a constant speed of 66 km/h. Calculate the a
mojhsa [17]

Answer:

Average speed will be 48.23 km/h

Explanation:

Let the distance up to hill is = d km

Speed when car goes to hill = 38 km/h

So time required t=\frac{distance}{speed}=\frac{d}{38}hour

Speed when car return from hill = 66 km/h

So time required to return fro hill t=\frac{d}{66}h

Total time t_{total}=\frac{t}{38}+\frac{t}{66}

Total distance = d+d =2d

So average speed=\frac{total\ distance}{total\ time}=\frac{2d}{\frac{d}{38}+\frac{d}{66}}=48.23km/h

8 0
3 years ago
A cyclist is travelling eastwards at a velocity
VMariaS [17]

Answer:

0.02 m/s^2

Explanation:

change in velocity= 4.5m/s - 2.3m/s = 2.2 m/s

acceleration= change in velocity/change in time

acceleration= 2.2/120= 0.0183

= 0.02 (to 2 significant figures)

8 0
3 years ago
How much time does it take to roll a ball 2 meters on a steep slope
11111nata11111 [884]

Answer:

asdadsadada

Explanation:

8 0
3 years ago
Other questions:
  • What are the different type of insulators in a torch?
    12·1 answer
  • Caleb is often described as absent-minded or forgetful. He would likely benefit from
    14·1 answer
  • Gayle cooks in her micwave
    11·1 answer
  • Find the magnitude of the resultant force and the angle it makes with the positive x-axis. (Let a = 200 N and b = 400 N. Round y
    12·1 answer
  • Help on 9 and 10! Please help me!
    10·1 answer
  • Kendall has empty graduated cylinder with markings and an identical graduated cylinder partway filled with water. She also has a
    6·2 answers
  • In order for a satellite to move in a stable circular orbit of radius 6588km at a constant speed, its centripetal acceleration m
    14·1 answer
  • On Apollo Moon missions, the lunar module would blast off from the Moon's surface and dock with the command module in lunar orbi
    14·1 answer
  • A circuit contains two resistors in series. The voltage drop across the first is 10 V. The voltage drop across the second is als
    13·1 answer
  • Distance meters Time (seconds) Trial Tria 2 Trials Average 3 053 059 0.52 055 6 106 719 104 Uning the values trom the data table
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!