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
Two satellites, A and B are in different circular orbits
jek_recluse [69]

Answer:

The ratio of the orbital time periods of A and B is \frac{1}{2}

Solution:

As per the question:

The orbit of the two satellites is circular

Also,

Orbital speed of A is 2 times the orbital speed of B

v_{oA} = 2v_{oB}        (1)

Now, we know that the orbital speed of a satellite for circular orbits is given by:

v_{o} = \farc{2\piR}{T}

where

R = Radius of the orbit

Now,

For satellite A:

v_{oA} = \farc{2\piR}{T_{a}}

Using eqn (1):

2v_{oB} = \farc{2\piR}{T_{a}}           (2)

For satellite B:

v_{oB} = \farc{2\piR}{T_{b}}              (3)

Now, comparing eqn (2) and eqn (3):

\frac{T_{a}}{T_{b}} = \farc{1}{2}

6 0
3 years ago
If we double the mass of the sun, what would happen to the gravitational force between the sun and earth?
Sphinxa [80]
It would increase
because the force is directly proportional to the Value of masses given
4 0
4 years ago
"when light travels from air into a piece of glass, a change in direction may occur. what is the name of this phenomenon
Kaylis [27]
As light travels through a medium, it moves in a straight line path,but when light passes from one medium into another medium, the light path bends,Refraction takes place. 
8 0
3 years ago
Read 2 more answers
Why is a spectrum of colors produced when white light passes through a prism?
Mkey [24]

Explanation: White light is all colors of light in one, so when white light passes through a prism, the light gets refracted and breaks apart into all of the colors on the visible light spectrum.

4 0
3 years ago
An imaginary line perpendicular to a reflecting surface is called _________.
n200080 [17]
<span>An imaginary line perpendicular to a reflecting surface is called "a normal" (principle line)

So, Your Answer would be Option B

Hope this helps!</span>
5 0
3 years ago
Read 2 more answers
Other questions:
  • How is temperature and pressure related to air volume?
    14·1 answer
  • Please help me! Thank you so much!
    9·1 answer
  • a ball is rolled uphill a distance of 3 meters before it slows,stops,and begins to roll back. the ball rolls downhill 6 meters b
    13·1 answer
  • Two hockey pucks with mass 0.1 kg slide across the ice and collide. Before
    10·1 answer
  • A car starts at 25 m/s and then slows down at 13 m/s in 5 seconds. What is the acceleration of the car? What does the accelerati
    13·1 answer
  • An ideal gas undergoes an adiabatic expansion, a process in which no heat flows into or out of the gas. As a result, (a) the tem
    7·1 answer
  • In " m a x f o r t e d u c a t i o n " . what is probability of vowels.​
    13·1 answer
  • Which way will the object accelerate if the forces given are the following
    9·1 answer
  • How long is the racetrack if it takes a racecar 3.4 a traveling at 75 m/s to finish? ​
    9·1 answer
  • What is the density of iron if 5.0 cm^3 has a mass of 39.5 g
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!