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
Tpy6a [65]
3 years ago
5

Two identical massless springs of constant k = 200N/m are fixed at opposite ends of a level track, as shown. A 5 kg block is pre

ssed against the left spring, compressing it by 0.15m. The block is then released from rest. The entire track is frictionless except for the region of length 0.25m between A and B, where mK = 0.08.
Physics
1 answer:
Rina8888 [55]3 years ago
5 0
Energy in spring: 
<span>E = ½k · x²; where x = 0.15m </span>

<span>From coefficient of friction, </span>
<span>F = µ · N = µ · mg; where m = 5kg and g = 9.807m/s² </span>

<span>Work done each pass = </span>
<span>W = ∫Fdx = Force · distance </span>

<span>Just divide E by W to see how many passes, use this to figure out where it stops. </span>
You might be interested in
You run 100 meters in 50 seconds. Calculate your speed, label with m/s
NemiM [27]

Answer:

2 m/s

Explanation:

speed = distance/time

s = 100/50 = 2

4 0
4 years ago
Which of the following quantities are unknown?
Sauron [17]

Answer:

Charge of the alpha particle

Explanation:

6 0
3 years ago
Student pushes a 50 N block across the floor for a distance of 15 m how much work was done to move the block
Talja [164]

Answer:

750 J

Explanation:

We have a student that pushes a 50N block  across the floor for a distance of 15m. The question is asking how much work was done to move the block.

To solve this, we must know that we are looking for a certain thing called joules. And to get the answer, we must follow the formula of W = FS

F being the force and S being the distance.

W = FS

W = (50)(15)

W = 750

Therefore, 750 joules is our answer.

7 0
3 years ago
Hopping is performed on 2 feet<br><br><br> True<br> False
gizmo_the_mogwai [7]
True welcome₩₩ sorry
8 0
3 years ago
Read 2 more answers
A quarter is flipped from a height of 1.45 m above the ground. How much time will it take to reach the ground if the person flip
Artemon [7]

It will take the quarter 0.151 seconds to reach the ground.

<u>Given the following data:</u>

  • Height = 1.45 meters
  • Initial velocity = 10.32 m/s

We know that acceleration due to gravity (a) for an object is equal to 9.8 meter per seconds square.

To find how much time it will take the quarter to reach the ground, we  would use the second equation of motion.

Mathematically, the second equation of motion is given by the formula;

S = ut + \frac{1}{2} at^2

Where:

  • S is the height or distance covered.
  • u is the initial velocity.
  • a is the acceleration.
  • t is the time measured in seconds.

Substituting the values into the formula, we have;

1.45 = 10.32(t) + \frac{1}{2} (9.8)t^2\\\\1.45 = 10.32t + 4.9t^2\\\\4.9t^2 + 10.32t - 1.45 = 0

The standard form of a quadratic equation is:

ax^2 + bx + c = 0

a = 4.9, b = 10.32 and c = 1.45

We would solve the above quadratic equation by using the quadratic equation formula;

x = \frac{-b\; \pm \;\sqrt{b^2 - 4ac}}{2a}

Substituting the values, we have;

t = \frac{-10.32\; \pm \;\sqrt{10.32^2\; - \;4(4.9)(1.45)}}{2(4.9)}\\\\t = \frac{-10.32\; \pm \;\sqrt{106.5024\; - \;28.42}}{9.8}\\\\t = \frac{-10.32\; \pm \;\sqrt{78.0824}}{9.8}\\\\t = \frac{-10.32\; \pm \;8.84}{9.8}\\\\t = \frac{-10.32\; + \;8.84}{9.8}\\\\t = \frac{1.48}{9.8}

<em>Time, t = 0.151 seconds.</em>

Therefore, it will take the quarter 0.151 seconds to reach the ground.

Read more: brainly.com/question/8898885

3 0
3 years ago
Other questions:
  • During an earthquake, _______ travels through the Earth's interior as _______ waves.
    10·1 answer
  • What causes the phases of the moon as seen from earth?
    14·2 answers
  • List of solid mixtures in your classroom
    8·1 answer
  • Whether calculating speed or acceleration, this data is required
    9·1 answer
  • Similar fossiles found all over the world true or false?
    8·1 answer
  • A ball with a weight of 2 N is attached to the end of a cord of length 2m . The ball is whirl in a vertical circle counterclockw
    14·1 answer
  • The diameter of earth is 12,756 km. How many times greater the suns diameter than the diameter of earth
    14·1 answer
  • What do you need to build a working electric motor?
    11·1 answer
  • Which structure has functions in both the respiratory system and the digestive system?
    13·2 answers
  • When an object absorbs light energy, it reflects
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!