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
Alex Ar [27]
3 years ago
8

An object rotates about a fixed axis, and the angular position of a reference line on the object is given by θ = 0.220e3t, where

θ is in radians and t is in seconds. Consider a point on the object that is 2.00 cm from the axis of rotation. At t = 0, what are the magnitudes of the point's (a) tangential component of acceleration and (b) radial component of acceleration?
Physics
1 answer:
OLga [1]3 years ago
5 0

Answer:a_{t}=3.96

a_{c}=0.8712

Explanation:

Given

\theta =0.220e^{3t}

r=2cm

Now angular velocity is given by \omega =\frac{\mathrm{d}\theta}{\mathrm{d}t}

\omega =0.66e^{3t}

Now linear velocity(v) is given =\omega r

v=1.32e^{3t}

Now tangential component of acceleration is given by

a_{t}=\frac{\mathrm{d}\vec{v}}{\mathrm{d}t}=3.96e^{3t}

at t=0

a_{t}=3.96cm/s^2

radial component of acceleration is given by

a_{c}=\omega ^{2}r

a_{c}=0.4356e^{6t}\times 2

a_{c}=0.8712e^{6t} cm/s^{2}

at t=0

a_c=0.8712 cm/s^{2}

You might be interested in
Which statement is a scientific law?
oksian1 [2.3K]

A. because it's been repeated multiple times

4 0
2 years ago
Read 2 more answers
John stretched while his muscles were cold. Which negative effect could occur?
Genrish500 [490]
<h3><u>Answer;</u></h3>

C) He could injure or pull a muscle.

<h3><u>Explanation</u>;</h3>
  • <em><u>When muscles are stretched the muscle fibers are temporary lengthened. Muscles have a unique ability to undergo contraction and lengthening since they are elastic.</u></em>
  • <em><u>When the muscles are warm they are more elastic, therefore, warming up the muscles is very important for the purpose of avoiding injuries.</u></em> Ir is important to engage in moderate cardiovascular warm-up prior to stretching, which increases the blood flow to the active and thus avoiding injuries to the muscles.
  • Stretching muscles when they are cold may bring injuries or cause muscle pulls, which are painful.
3 0
3 years ago
Read 2 more answers
Please help me with the correct answer​
Rudik [331]

Answer: fluid fraction

Explanation:

3 0
3 years ago
What do active solar heat systems have that passive systems do not have?.
tamaranim1 [39]

Answer:

Passive solar heating uses building design to utilize sunlight, while active solar heating uses technology.

Explanation:

lol

5 0
2 years ago
This is a bond in which a single pair of electrons is shared between a pair of atoms.
Murrr4er [49]

Answer:single bond

Explanation:

8 0
2 years ago
Other questions:
  • How much heat is absorbed by a 29g iron skillet when its temperature rises from 9oC to 105oC?
    9·1 answer
  • Is F=mxa expressed in equation in newtons second law of motion?
    12·1 answer
  • Why does the frequency change and wavelength not change in an instrument?
    8·1 answer
  • A bullet is fired from a gun at 30 angle to the horizontal with a muzzle velocity of 600 m/s.
    12·1 answer
  • A large number of very industrious people make a very long pole. It is 10.0 light years long! ( As they measure it. ) Soon a spa
    5·1 answer
  • Can someone help me?
    7·1 answer
  • Why doesnt the moon crash towards earths surface?
    15·2 answers
  • A net force of 150 N is exerted on a rock. The rock has an acceleration of 20. m/s2 due to this force. What is the mass
    5·1 answer
  • An object is moving in a straight line with a constant acceleration. Its position is measured at three different times, as shown
    5·1 answer
  • A disk-shaped platform has a known rotational inertia. The platform is mounted on a fixed axle and rotates in a horizontal plane
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!