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
lesya692 [45]
3 years ago
9

An external torque is applied to a flywheel which is a solid cylinder of mass m = 100 kg and radius

Physics
1 answer:
tatyana61 [14]3 years ago
7 0

The angular acceleration is 6.25 rad/s^2

Explanation:

To solve this problem we can use the equivalent of Newton's second law for rotational motions:

\tau = I \alpha (1)

where

\tau is the torque acting on the body

I is the moment of inertia of the body

\alpha is the angular acceleration

In this problem we have:

\tau = 450 Nm is the torque

The moment of inertia of a solid cylinder about its axis is

I=\frac{1}{2}MR^2

where

M = 100 kg is the mass

R = 1.2 m is the radius

Substituting,

I=\frac{1}{2}(100)(1.2)^2=72 kg m^2

And solving eq.(1) for \alpha, we find the angular acceleration:

\alpha = \frac{\tau}{I}=\frac{450}{72}=6.25 rad/s^2

Learn more about rotational motions:

brainly.com/question/9575487

brainly.com/question/9329700

brainly.com/question/2506028

#LearnwithBrainly

You might be interested in
PLEASE HELP! <br><br> how am i supposed to label a graph using the points from the protractor?
ddd [48]

Answer:

srghgddggjjjkkkk

Explanation:

fhhgxxxxxxxx3

errghydhi

6 0
2 years ago
Correct Number Formats Numbers may be entered in several formats - including scientific notation and numerical expressions.
Illusion [34]

Answer:

a. Valid

b. Invalid

c. Invalid

d. Invalid

e. Valid

f.  Valid

g. Invalid

Explanation:

a.

Since, it follows all the four rules,

Therefore, this number is <u>Valid</u>

b.

It uses upper case E, instead of lower case e.

Therefore, it is <u>Invalid</u>

c.

It violates third rule for including unit.

Therefore, it is <u>Invalid</u>

d.

It violates the first rule. As, there is a space between 6 and e. While in the example given in question, there is no gap.

Therefore, it is <u>Invalid</u>

e.

Since, it follows all the four rules,

Therefore, this number is <u>Valid</u>

f.

Since, it follows all the four rules,

Therefore, this number is <u>Valid</u>

g.

It violates third rule for including unit.

Therefore, it is <u>Invalid</u>

6 0
3 years ago
Which are properties of a liquid? Check all that apply.
Strike441 [17]

Answer:

the property of liquid are

1 they can flow from one place to another if surface is slanted

2 it cannot be compressed

6 0
2 years ago
The membrane that surrounds a certain type of living cell has a surface area of 5.3 x 10-9 m2 and a thickness of 1.1 x 10-8 m. A
kotykmax [81]

Answer:

2.1\times 10^{-12} c

Explanation:

We are given that

Surface area of membrane=5.3\times 10^{-9} m^2

Thickness of membrane=1.1\times 10^{-8} m

Assume that membrane behave like a parallel plate capacitor.

Dielectric constant=5.9

Potential difference between surfaces=85.9 mV

We have to find the charge resides on the outer surface of membrane.

Capacitance between parallel plate capacitor is given by

C=\frac{k\epsilon_0 A}{d}

Substitute the values then we get

Capacitance between parallel plate capacitor=\frac{5.9\times 8.85\times 10^{-12}\times 5.3\times 10^{-9}}{1.1\times 10^{-8}}

C=0.25\times 10^{-12}F

V=85.9 mV=85.9\times 10^{-3}

Q=CV

Q=0.25\times 10^{-12}\times 85.9\times 10^{3}=2.1\times 10^{-12} c

Hence, the charge resides on the outer surface=2.1\times 10^{-12} c

5 0
3 years ago
Read 2 more answers
PLEASE ANSWER! WILL MARK BRAINLIEST!
Angelina_Jolie [31]

The first one would be thermal energy

8 0
3 years ago
Other questions:
  • Mickey, a daredevil mouse of mass m , m, is attempting to become the world's first "mouse cannonball." He is loaded into a sprin
    7·2 answers
  • A 112g serving of ice cream contains 19g of fat. What percentage of the serving is fat?
    10·1 answer
  • a force 10N drags a mass 10 kg on a horizontal table with acceleration 0.2m\s. If the acceleration due to gravity is 10m\s2, a c
    7·1 answer
  • To pull a nail out of a wood board a carpenter does 1000 J of work. The hammer he uses does 835 J of work. What is the efficienc
    8·1 answer
  • How are the current moving in the simulation of battery
    14·1 answer
  • What do you call the maximum displacement of a wave from the equilibrium position?
    13·1 answer
  • What type of magnetism is present in a bar magnet?
    11·2 answers
  • A block is 10cm long, 5cm wide and 2cm high and weighs 100g. What is the volume of the block? What is the density?
    7·1 answer
  • A beam of light has a wavelength of 549nm in a material of refractive index 1.50. In a different material of refractive index 1.
    14·1 answer
  • Write a reaction equation to show HCO3 acting as an acid​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!