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
alukav5142 [94]
1 year ago
11

If a 20 N block experiences a force of kinetic friction of 8.0 N

Physics
1 answer:
shutvik [7]1 year ago
6 0

The coefficient of kinetic friction (μ) between the block and the table is 0.4.

<h3>What is kinetic friction?</h3>

This sis the frictional force between an object in motion with the surface in contact.

μN = ff

where;

  • N is normal reaction due to weight of the block
  • ff is frictional force
  • μ is coefficient of friction

μ = ff/N

μ = 8/20

μ = 0.4

Thus, the coefficient of kinetic friction (μ) between the block and the table is 0.4.

Learn more about coefficient of friction here: brainly.com/question/20241845

#SPJ1

You might be interested in
when the c4 key on a piano keyboard is pressed, a string inside the piano is struck by a hammer and begins vibrating back and fo
Ugo [173]
The correct answer is f= 260 Hz
7 0
3 years ago
Read 2 more answers
What best describes the angle between a changing electric field and the electromagnetic wave produced by it? (2 points)
Oksanka [162]

A) always equal to a right angle

4 0
3 years ago
Read 2 more answers
A ball is thrown up into the air with 100 j of kinetic energy, which is transformed to gravitational potential energy at the top
jenyasd209 [6]

The kinetic energy when it returns to its original height is 100 J

Solution:

The ball is thrown up with a Kinetic Energy K. E. = 0.5×m×v² = 100 J

Therefore the final height is given by

<u>u² = v² -2·g·s</u>

Where:

u = final velocity = 0

v = initial velocity

s = final height

Therefore v² = 2·g·s = 19.62·s

P.E = Potential Energy = m·g·s

Since v² = 2·g·s

Substituting the value of v² in the kinetic energy formula, we obtain

K. E. = 0.5×m×2·g·s = m·g·s = P.E. = 100 J

When the ball returns to the original height, we have

v² = u² + 2·g·s

Since u = 0 = initial velocity in this case we have

v² = 2·g·s and the Kinetic energy = 0.5·m·v²

Since m and s are the same then 0.5·m·v² = 100 J.

As the height of the ball increases the kinetic energy of the ball is converted into gravitational potential energy. This means that the kinetic energy of the bullet is reduced. When the ball reaches its maximum height, it momentarily comes to rest and the ball's kinetic energy is zero. When the ball hits the ground, its potential energy is converted to kinetic energy.

Learn more about Kinetic energy here:-brainly.com/question/25959744

#SPJ4

6 0
1 year ago
How does a higher heat capacity affect the amount of time it takes for an object’s temperature to change?
Alenkasestr [34]
higher~ specific ~heat  ~capacity  ~means ~ it  ~has  ~higher  ~heat ~  energystorage



8 0
3 years ago
A rocket rises vertically, from rest, with an acceleration of 3.2 m/s2 until it runs out of fuel at an altitude of 1300 m. After
svetlana [45]

Explanation:

Below is an attachment containing the solution.

6 0
3 years ago
Other questions:
  • How does energy from an ocean wave power stuff in a house?
    12·1 answer
  • It turns out that Mercury and Mars have the same gravity as one another – that is, you would weigh the same on the surface of Me
    15·1 answer
  • A 0.30 kg mass is sliding on a horizontal, frictionless air track with a speed of 4.0 m/s when it instantaneously hits and stick
    13·1 answer
  • Linear Motion is the most basic type of motion. true or false​
    7·1 answer
  • Compute the moon's centripetal acceleration in its orbit around the earth. Recall that the moon orbits the earth every 28.0 ����
    9·1 answer
  • The transfer of energy that occurs when a forceis applied over a distance is _____. Fill in the blank
    7·1 answer
  • What happens to an object at rest if there is no net force<br> on the object?
    13·1 answer
  • What scientific tool is needed to determine if any specimens are made of one or more cells?
    9·2 answers
  • A plane flying horizontally at 384 m/s releases a package at an altitude of 15,721 m.
    14·1 answer
  • 5. Find the velocity of a train that traveled 75 km in 35 minutes. (answer
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!