Updates

• 
  Imad Mustafiz commented on Fatima Ahmed's classified listing.

  

  Adam's Brunoise Dice - $5 Physics Quiz

  Adam's Brunoise Dice - $5 physics quiz
   
  
  Adam Petropoulos recently got admitted to the culinary institute named Le Monde in Athens, Greece. His career goal was to become a chef.  He loved food!  He wanted to learn the art of flavor...

  • June 21, 2021

  • Sourav Chowhan likes this.
  • View all 22 comments
  • 
    Khadeeza Afruz Shammee Pascal's principle of pressure describes this knife phenomenon. As a scalar physical quantity ,pressure is defined as the force per unit area applied perpendicular to the surface which it is applied .
    The elementary mathematical expression for pressure...  morePascal's principle of pressure describes this knife phenomenon. As a scalar physical quantity ,pressure is defined as the force per unit area applied perpendicular to the surface which it is applied .
    The elementary mathematical expression for pressure is giving by ,
    P = F/A
    Here, P is the pressure , F is the force acting perpendicular to the surface to which this force is applied and A is the area of the surface .
    The same force applied by a sharp knife with a smaller area of contact will exerts a much greater pressure than a blunt knife having a considerable larger area of contact .
    Once a blunt knife is through the object (vegetable or other food), there is a greater chance for the pressure to lead to slippage, skidding and injury. A sharp knife can cut using the edge of the e knife with a safer slicing. Rather, cuts from sharper knives can actually heal more easily than those from dull knives. A sharp knife is a safer knife than a dull knife.  less

    • June 25, 2021
  • 
    Aria Hossain In physics force=pressure/area. In order to cut food, you have to exert force. According to the equation, force is directly proportional to pressure. A blunt knife has more area around the cutting edge than a sharp knife. So a blunt knife requires more...  moreIn physics force=pressure/area. In order to cut food, you have to exert force. According to the equation, force is directly proportional to pressure. A blunt knife has more area around the cutting edge than a sharp knife. So a blunt knife requires more pressure for the same amount of force to be exerted, as the pressure applied increases the chances of the knife slipping and cutting Adam's hand increases. Similarly, a sharp knife would require less pressure to be applied for the same amount of force to be exerted, this not only allows Adam to cut through the food but also prevents the knife from slipping and cutting his hand.  less

    • June 26, 2021
  • 
    Abdullah Julaybib Firstly, you’ll need more pressure to use a blunt knife.
    P=F/A, for a fixed area, force is directly proportional to pressure. If the
    area of a blunt and a sharp knife is same, then doubling the pressure on blunt
    knife means doubling the force....  moreFirstly, you’ll need more pressure to use a blunt knife.
    P=F/A, for a fixed area, force is directly proportional to pressure. If the
    area of a blunt and a sharp knife is same, then doubling the pressure on blunt
    knife means doubling the force.
    
    Secondly,F= {m(v-u)}/t
    
    Assume, two knives have same mass and you take same amount of time to cut. As
    you start from a zero velocity, that means u=0. Ultimately you end up giving
    much more velocity to the blunt than sharp one. So, if you accidentally slip
    while cutting, blunt will hit your finger faster, which might cause a serious
    injury. Sharp knife will have less velocity, which has multiple advantages:
    bringing the sharp knife to rest is easier than blunt one. If you slip, sharp
    knife won’t hit so fast. It may cause a
    little scratch, or you’ll be lucky to stop the sharp knife as soon as it touches your skin (blunt one
    would cause a deep scar).
    
    
    For same time duration, point of contact (finger and knife)
    faces two different momenta. As a result,...    less

    • June 26, 2021
  • 
    Abhay Sunny Pressure= force/area, area of sharp knife is less than area of blunt knife, p is proportional to 1/area, so pressure of sharp knife is more than blunt knife.Don't get confused with the wight and pressuring, pressure is the force on a unit area that is...  morePressure= force/area, area of sharp knife is less than area of blunt knife, p is proportional to 1/area, so pressure of sharp knife is more than blunt knife.Don't get confused with the wight and pressuring, pressure is the force on a unit area that is help perpendicular whereas weight is the force by which the earth attracts everything towards it's center.  

    • June 27, 2021
  • 
    Abdullah Masud This is simply an example of pressure in our daily lives. Here, according to Pascal's law (P = f/a, where pressure is the force applied over a certain area), the sharp knife can exert greater pressure than the blunt knife, as the sharper knife has less...  moreThis is simply an example of pressure in our daily lives. Here, according to Pascal's law (P = f/a, where pressure is the force applied over a certain area), the sharp knife can exert greater pressure than the blunt knife, as the sharper knife has less contact area for the same force than the blunt knife, so the force would be exerted over a smaller area. So in order to cut anything, one would need to apply a larger force in a blunt knife than a sharper knife, and this might result in the blunt knife cutting the hand due to excessive pressure applied by the user while cutting any other objects.  less

    • June 27, 2021
• 
  Noshin Tasnia is now friends with Imad Mustafiz.

  • February 20, 2021
• 
  Fatima Ahmed: Hi Imad, thanks for writing the wiki on Educational system. It was a brilliant write-up. We usually do not see this kind of good writing in a first try, but you nailed it. Your article had very good English. All your points were fantastic, ideas...  moreHi Imad, thanks for writing the wiki on Educational system. It was a brilliant write-up. We usually do not see this kind of good writing in a first try, but you nailed it. Your article had very good English. All your points were fantastic, ideas were brilliantly conveyed in a nice step by step manner and lots of personal and practical examples were used to keep the article interesting. We are sharing your article with everyone in this link:  

  

  Reality Vs Expectation: My version on a comprehensive teaching m

  Reality Vs Expectation: My version on a comprehensive teaching method - Coolinventor Wiki

  • February 18, 2021

  • Imad Mustafiz likes this.
  • 
    Imad Mustafiz Thank you so much for your precious feedback! Hoping to submit more write-ups in the near future.

    • February 18, 2021
• 
  Imad Mustafiz liked Fatima Ahmed's photo.

  

  Imad's 'Server71' idea for the technology contest. This is a new kind of idea! Thanks. Here are the details: https://drive.google.com/file/d/1GQux9EwX43H9dF13_1EBT3G5sCYFLBMg/view?usp=sharing

  • February 11, 2021

  • Nishat Tamanna and Imad Mustafiz like this.
• 
  Fatima Ahmed: Imad's 'Server71' idea for the technology contest. This is a new kind of idea! Thanks. Here are the details: https://drive.google.com/file/d/1GQux9EwX43H9dF13_1EBT3G5sCYFLBMg/view?usp=sharing

  

  • February 10, 2021

  • Nishat Tamanna and Imad Mustafiz like this.
• 
  Imad Mustafiz commented on Fatima Ahmed's blog entry.

  

  Rahim's Education

  Rahim's Education
   
  
  Please click here to read this story and find out the topic for our next wiki. 
  If you are interested to write about this wiki, please go to the comment section below and let us know why do you want to write about this t...

  • January 29, 2021

  • Sakib Maksud, Jannatin Naim, and nishi kabbo like this.
  • View all 32 comments
  • 
    Nayeema Bushra The very fact that some realized the flaw, might be an indicator of overcoming an important stage of it.

    • January 30, 2021
  • 
    Sajidul Islam I've also faced the same problem as Rahim. I preferred that a school should be such that the mental and physical development of the students is good. So that they can develop themselves as real human beings.

    • January 30, 2021
  • 
    Shahriar Dipto Educational institutions are the second most important ognanization. With flaws in this system, I am still seeing the impact on later lives. I want to dive into the tactics how we could have start fresh.

    • January 30, 2021
  • 
    Abhay Sunny During this lockdown, i have noticed Online education is not bad at all. we were wasting a lot of time while going to schools. That's why i am interested to write on this project to tell my uncovered idea

    • January 30, 2021
  • 
    Afroza Sultana This story is a mirror of most school education systems. If I have the opportunity, I can share my views with you.

    • January 31, 2021
• 
  Imad Mustafiz commented on Fatima Ahmed's blog entry.

  

  I Will Change the World By....

  I Will Change the World by....
   
  
  Please complete the sentence 'I Will Change the World by...' and elaborate your answer in the Coolinventor Wiki page. Please write your wiki like a story in narrative...  moreI Will Change the World by....
   
  
  Please complete the sentence 'I Will Change the World by...' and elaborate your answer in the Coolinventor Wiki page. Please write your wiki like a story in narrative format. 
   
  If you are interested t...  

  • December 19, 2020

  • 15 people like this
  • View all 42 comments
  • 
    pulak islam Interested

    • December 19, 2020
  • 
    Noorjahan Binte Farhana Interested

    • December 19, 2020
  • 
    Shahbaj Nihan Interested

    • December 19, 2020
  • 
    Noshin saiyara interested

    • December 19, 2020
  • 
    Noshin saiyara interested

    • December 19, 2020
• 
  Imad Mustafiz liked Bj Zishan's photo.

  

  But Allah says:
  "wait,the best is yet to come"

  • December 19, 2020

  • 6 people like this
• 
  Imad Mustafiz joined the group Coolinventor Contributors

  • December 10, 2020
• 
  Imad Mustafiz is now friends with Fatima Ahmed.

  • December 7, 2020
• 
  Imad Mustafiz has added a new profile photo.

  

  • December 7, 2020
• 
  Imad Mustafiz follow Fatima Ahmed.

  • December 7, 2020
• 
  Imad Mustafiz has just signed up. Say hello!

  • December 7, 2020