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
vagabundo [1.1K]
2 years ago
10

A skater has outstretched arms preparing for a turn with a moment of inertia of

Physics
1 answer:
Helen [10]2 years ago
7 0

Answer:

The final angular speed is 16.1 rad/s

Explanation:

Given;

initial moment of inertia, I₁ = 2.56 kg.m²

final moment of inertia, I₂ = 0.40 kg.m²

initial angular speed, ω₁ = 0.4 rev/s = 2.514 rad/s

Apply the principle of conservation of angular momentum;

I₁ω₁ = I₂ω₂

where;

ω₂ is the final angular speed

ω₂ = (I₁ω₁) / (I₂)

ω₂ = (2.56 x 2.514) / (0.4)

ω₂ = 16.1 rad/s

Therefore, the final angular speed is 16.1 rad/s

You might be interested in
All of the following are physical proporties of chlorine EXCEPT it ___
ss7ja [257]

Answer:

Option D

Reacts with sodium to form chloride

Explanation:

First, reaction between chlorine and sodium is a chemical reaction and not physical properties. Secondly, when chlorine reacts with sodium, it forms sodium chloride, NaCl NOT chloride as depicted by the statement. Otherwise, chlorine exists in the form of gas and is yellowish in color. Moreover, it's density is approximately 3.11 grams per liter. Therefore, the right answer is option D

8 0
2 years ago
if the user exerts a 14 n force on the upper handle, estimate the force on the clove. express your answer with the appropriate u
Marizza181 [45]

The force on the clove will have the same magnitude but a negative sign with it that is F = - 14 N

<h3>What is force and how do we calculate it ?</h3>

The definition of force is: The pushing or pulling on a massed object changes its velocity. Force is an external agent that has the power to alter a body's resting or moving condition.

It has a size and a movement.

Newton's second law of motion defines the force formula as follows:

A force is equal to an object's mass times its acceleration, or F = m a. You must use SI units when applying this formula: kilograms for mass, meters per second squared for acceleration, and newtons for force.

To know more about force you may visit the link which is :

brainly.com/question/26115859

#SPJ4

3 0
1 year ago
how would the velocity of the book change if the applied force were equal to the sliding friction force
Inessa [10]
Yes, Sliding friction opposes the movement of the book, slowing it down.sliding That's the 'kinetic' kind.. According to Newton's second law, F=ma. That is, the bear's acceleration should be proportional to the total force acting on the bear. As the bear's velocity is constant, its acceleration is zero. Therefore, the total Force acting on the bear is zero. Thus, the friction has to be equal in magnitude and opposite in direction to the bear's weight. As W=mg, we get that its weight is  <span>9.8*400=3,920 Newton. Thus, the friction acting on the bear is 3,920 Newton</span>
3 0
3 years ago
You hang a 350 gram mass on a spring and its displaced 0.5 cm. Its spring constant is
Keith_Richards [23]

Answer:

Explanation:

kx = mg

k = mg/x

k = 0.350(9.81)/0.005

k = 686.7

k = 687 N/m

4 0
2 years ago
I am one of the most dynamic processes of Earth. I help recycle Earth's materials. I move Earth's crustal plates, creating many
Sergio039 [100]

I Can only think of tectonic plates or gravity
7 0
3 years ago
Read 2 more answers
Other questions:
  • Choose the word that best completes each sentence.
    13·2 answers
  • You are watching people practicing archery when you wonder how fast an arrow is shot from a bow. With a flash of insight you rem
    11·1 answer
  • How do good and bad ozone forms
    12·2 answers
  • Which list places the layers of the sun in the correct order from outermost to innermost?
    12·1 answer
  • Which two factors does the power of a machine depend on? А. work and distance B.. force and distance C. work and time D. time an
    10·1 answer
  • Cyclist A and B cycled atan average speed of 15 km/h and 20 km/h respectively from the same starting point X on the same route.
    6·1 answer
  • An alumium rod when measured with a steel scale both being at 25 degree celcius appears to be 1 meter long. If the scale is corr
    12·2 answers
  • Disordered eating is often __________.
    6·2 answers
  • Pls will give brainliest!! How is an atom categorized when it gains an extra electron, and how is it categorized when it loses a
    10·1 answer
  • Write the working mechanism of Mercury Barometer and explain its parts in short.​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!