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
choli [55]
3 years ago
5

Angular velocity in the z direction of a flywheel is w(t)=A + Bt2 The numerical values of the constants are A=2.75 and B=1.50. W

hat is the angular acceleration α(t) when t=0s and t=5.00s?
Physics
1 answer:
Ivanshal [37]3 years ago
6 0

Answer:

α(0) = 0 rad/s²

α(5) = 15 rad/s²

Explanation:

The angular velocity of the flywheel is given as follows:

w(t) = A + B t²

where, A and B are constants.

Now, for the angular acceleration, we must take derivative of angular velocity with respect to time:

Angular Acceleration = α (t) = dw/dt

α(t) = (d/dt)(A + B t²)

α(t) = 2 B t

where,

B = 1.5

<u>AT t = 0 s</u>

α(0) = 2(1.5)(0)

<u>α(0) = 0 rad/s²</u>

<u></u>

<u>AT t = 5 s</u>

α(5) = 2(1.5)(5)

<u>α(5) = 15 rad/s²</u>

You might be interested in
When air resistance equals the weight of an object, the object has reached
MissTica

Answer:

When air resistance equals the weight of an object, the object has reached free fall.

Explanation:

  • When an object has only force acting on it as gravity then, it experiences free fall.
  • During free fall all the forces except gravity is balanced by one another.
  • In the question, object's weight is balanced by air resistance so it is in the state of free fall.
  • At the null point of free fall, object experiences weightlessness i.e. it feels like object is not attracted by any force.  
6 0
3 years ago
What is the source of Earth’s magnetic field?
zhuklara [117]

Answer and Explanation:

The main source of earth magnetic field is the metals and iron present in earth crust these metals are mainly found in liquid state in earth crust and we know that whenever there is spinning of these liquid metals then there will magnetic field generate, So the main source of earth magnetic field is the metals present in earth crust.

6 0
3 years ago
Read 2 more answers
How can having a mentor help individuals achieve their goals? A. Mentors can increase accountability. B. Mentors can increase mo
lana [24]

Your best bet is to go with D.

6 0
3 years ago
Read 2 more answers
Which part of the electromagnetic spectrum is divided into seven ranges of wavelengths and is the part visible to the human eye
oksano4ka [1.4K]
In one of the most amazing coincidences in all of science,
the part of the electromagnetic spectrum that's visible to the
human eye is called "visible light".

Visible light is not 'divided' into anything. We mention the names
to seven of the colors in visible light. But all of the thousands of
OTHER colors that we can see are in there too, even though we
don't bother to list their names when we buzz through the rainbow
in the third grade.
6 0
3 years ago
Read 2 more answers
What are noble gases?
Bas_tet [7]

Answer:

noble gases are basically a group of gases that are similar in their chemical compounds, theres six of them : helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and the radioactive radon (Rn).

~batmans wife dun dun dun.....

6 0
3 years ago
Other questions:
  • A straight wire segment 2 m long makes an angle of 30degrees with a uniform magnetic field of 0.37 T. Find the magnitude of the
    5·2 answers
  • A velocity selector in a mass spectrometer uses a 0.150 T magnetic field. (a) What electric field strength (in volts per meter)
    9·1 answer
  • Kalyan ramji sain, of india, had a mustache that measured 3.39 m from end to end in 1993. suppose two charges, q and 3q, are pla
    12·1 answer
  • Use Poiseuille's Law to calculate the rate of flow in a small human artery where we can take η = 0.028, R = 0.008 cm, l = 2 cm,
    6·1 answer
  • two soccer players are running for the same ball during a game. Without looking the two collide. One player has a mass of 45 kg
    5·1 answer
  • Cardiorespiratory fitness is most likely to improve due to which of the following types of exercise?
    10·2 answers
  • How fast would you say the earth rotates near the equator?
    7·1 answer
  • A body accelerate uniformly from rest at 2m/s square.Calculate its velocity after traveling 9m
    7·1 answer
  • A concave mirror of focal length 10cm forms an inverted image of 40cm from the mirror and 4cm high. Determine the position and s
    11·1 answer
  • What is the internal energy of 3.00mol of N2 gas at 25c?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!