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  PhilosophicalAnt2817

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  Secondary IV • 4yr.

  What is the kinetic energy calculation

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  AgileWolf7517

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  Secondary II • 4yr.

  pover vous m'aider a ordone en taille svp en ordr croissant :

  
  

  cellue chromosome noyau et gene mrci

  

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  CygneNoble4319

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  Secondary IV • 4yr.

  Bonjour! Je ne sais pas vraiment comment le faire…

  

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  FastFox1311

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  Secondary III • 4yr.

  Good evening,

  
  

  Can you show me how to solve a complete dilution problem? I have a lot of difficulty with that!

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  RobotLibre9516

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  Secondary II • 4yr.

  Hey !

  What's the difference between an animal cell and a plant cell.

  Thanks in advance!

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  DeltaPotassium727

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  Secondary I • 4yr.

  Hello! Is the movement of a hand on a clock helical or  a rotation? I don’t understand these two movements, can I have examples of the 2 please?

  Thank you!

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  1 answer
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  DeltaPotassium727

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  Secondary I • 4yr.

  Hello!

  What does it mean when litmus paper does not change color? Thank you!

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  DeltaPotassium727

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  Secondary I • 4yr.

  Hi,

  In my homework, I have to find an example of something acidic and something basic, can you give me some examples?

  Thank you !!

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  LionSolidaire8599

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  Secondary I • 4yr.

  What is the atmosphere composed of and how do humans affect its composition? Thanks a lot!

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  1 answer
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  TomateSupra7536

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  Secondary IV • 4yr.

  Why do we sometimes calculate the work with the cosinus of the angle between the force and the displacement and sometimes without it? Is this in a special case or an exception?

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  TomateSupra7536

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  Secondary IV • 4yr.

  The Perseverance robot weighs 1025 kg on Earth. What will be its weight on Mars? Can you help me?

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  1 answer
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  NaiveAbafar3712

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  Secondary I • 4yr.

  I don't understand the logic of the periodic table. Why does it have this weird shape? Why not just a rectangle? How come the items are classified like this?

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  1 answer
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  NaiveAbafar3712

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  Secondary I • 4yr.

  Hello,

  I don't understand the difference between each of these terms: atom, molecule, element and compound.

  Can you help me ?

  Thanks

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  1 answer
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  FastFox1311

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  Secondary III • 4yr.

  Hello, what's the difference between malleability, elasticity and ductility?

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  FastFox1311

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  Secondary III • 4yr.

  Hello,

  Could you explain to me how forces operate on objects and the consequences they can have on them?

  Thank you so much!

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  FastFox1311

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  Secondary III • 4yr.

  Hello,

  I am having difficulty with the guidings, could you explain to me how it works please?

  Thank you so much!

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  FastFox1311

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  Secondary III • 4yr.

  Hello :)

  I have trouble understanding the characteristics of the links and understanding what is what (elastic or not, indirect or not, removable, etc.). Can you help me?

  Thanks :)))

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  1 answer
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  FastFox1311

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  Secondary III • 4yr.

  What is dimensional tolerance and what is the ± (+/-) symbol in technical drawings?

  thankss

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  FastFox1311

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  Secondary III • 4yr.

  Hello!

  I have a lab tomorrow and I have to write a protocol for the dissolution that I have to do, where I have to use a 50 ml volumetric flask and I have to make a concentrated solution of 0.08 g / ml of NaCl. First, how do I calculate the mass of NaCl? Then, can you give me some tips for writing my protocol ??

  Thank you !!!

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  1 answer
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  FastFox1311

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  Secondary III • 4yr.

  Hello,

  Could you explain to me what a dissolution is? I am not sure I understand.

  Thank you so much!

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  1 answer
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  FastFox1311

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  Secondary III • 4yr.

  Hi!

  How do we know if we have a homogeneous or heterogeneous mixture? Also, in which of these 2 categories does a colloid fit?

  Thanks already!

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  1 answer
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  HumbleArmadillo3023

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  Secondary III • 4yr.

  Hello,

  I'm having a hard time figuring out what a cut and section are when it comes to technical drawings. Could you please explain it to me?

  Thank you so much!

  Science

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  1 answer
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  HumbleArmadillo3023

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  Secondary III • 4yr.

  Hi!

  In my science homework, I am asked to reproduce a drawing at 2:1 scale, but what does that mean?

  Thanks :))

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  HumbleArmadillo3023

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  Secondary III • 4yr.

  Hi,

  How do I find the best possible orientation for a cut-through view?

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  1 answer
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  HumbleArmadillo3023

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  Secondary V • 4yr.

  Do you always have to put all views of an object in a multiple view projection? I find it long!

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  1 answer
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  HumbleArmadillo3023

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  Secondary III • 4yr.

  What is isometric projection used for and what is the difference with an oblique projection? Thanks for the help

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  1 answer
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  GrenatResponsable523

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  Secondary IV • 4yr.

  Hi

  I am having difficulty differentiating endothermic and exothermic reactions when using the enthalpy and not using it.

  Can you help me? Thank you

  Science

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  1 answer
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  TomateSupra7536

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  Secondary IV • 4yr.

  Hydrogen has a valence electron. True or false: it is part of the alkali metal group?

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  1 answer
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  GrenatResponsable523

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  Secondary IV • 4yr.

  Hi!! Can someone explain to me the difference between temperature and heat? Thank you times a thousand !!

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  1 answer
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  TomateSupra7536

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  Secondary IV • 4yr.

  In a periodic table, how do the electronegativity, atomic mass, ionization energy, and atomic radius of the elements vary?

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  1 answer