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
Softa [21]
3 years ago
6

he atomic radii of Li and O2- ions are 0.068 and 0.140 nm, respectively. (a) Calculate the force of attraction in newtons betwee

n these two ions at their equilibrium interionic separation (i.e., when the ions just touch one another). (b) What is the force of repulsion at this same separation distance
Physics
1 answer:
Crazy boy [7]3 years ago
6 0

Answer:

a

 F =  -1.07 *10^{-8} \  N

b

F_r  =  1.07 *10^{-8} \  N

Explanation:

Generally the force of attraction between this two irons is mathematically represented as

F =  \frac{k *  [Q_{Li}  ] * [Q_{O}  ]  }{ r^2}

Here k is known as the proportionality constant with value k = 2.31  *  10^ {-28} J \cdot m

substituting -2 for Q_{O} i.e the charge on oxygen , +1 for Q_{Li} i.e the charge on Lithium and [0.140 + 0.068 ] nm= 0.208 nm =  0.208*10^{-9} for r

So

F =  \frac{ 2.31  *  10^ {-28}*  +1   * -2   }{ ( 0.208*10^{-9} )^2   }

F =  -1.07 *10^{-8} \  N

Generally the force of repulsion will be the magnitude but different direction to the force o attraction

So Force of repulsionn is

F_r  =  1.07 *10^{-8} \  N

You might be interested in
What are some similarity’s and differences between potential and kinetic energy
Lady_Fox [76]

Answer: posteintal is like something that is about to happen and kinetic is like the energy while something is moving

Explanation:

6 0
3 years ago
What is the velocity vector of a particle traveling to the right along the hyperbola y=x^-1 with a constant speed 5cm/s when the
Ronch [10]
:<span>  </span><span>The gradient of the curve 1/x at x=2 is m = -¼ 
We may choose any length of line to represent the direction of the slope (direction vector) at that point. We could choose a line for which x = 2 and then y would have to be -½ so that the gradient is still = -½/2 = -¼. It is simply convenient to choose a unit length for x, making y = -¼ The length of the resultant of x and y is √(1²+¼²) = √(17/16) = √(17)/4 which is a direction vector. If we had taken the direction vector to be (2, ½) then we would have a resultant direction vector of √17/2. It doesn't really matter what length the direction vector is - it's job is only to show the direction. So their choice of 1 is quite arbitrary but convenient, since it is easy to work with units – that's why we use units! 
Now, we know that the magnitude of the velocity vector must be 5 and the magnitude of our direction vector at the moment is √(17)/4. We therefore need to multiply this direction vector by 20/√(17) to get 5 – just try it : √(17)/4 × 20/√(17) = 5. 

We could equally well have done this with (2, ½) and would have got 2½ for lambda.</span>
3 0
3 years ago
What do the spheres in the model represent
Sophie [7]

Answer: no

Explanation: we need a picture

4 0
3 years ago
Read 2 more answers
In which region does the ocean get the most sunlight throughout the year?
valentinak56 [21]

Answer: a

Explanation:

6 0
3 years ago
When an object moves, where does the energy come from?
Eddi Din [679]
Ans: Kinetic and potential energies are found in all objects. If an object is moving, it is said to have kinetic energy (KE). Potential energy (PE) is energy that is "stored" because of the position and/or arrangement of the object. The classic example of potential energy is to pick up a brick.
5 0
3 years ago
Other questions:
  • A coaxial cable consists of alternating coaxial cylinders of conducting and insulating material. Coaxial cabling is the primary
    12·1 answer
  • Sallie's recipe calls for a total of cups of flour to make biscuits. It says to use cup of flour from the total for rolling out
    15·2 answers
  • What is the term for the pattern of spiral impressions inside a handgun?
    6·2 answers
  • A city bus travels 6 blocks east and 8 blocks north. Each block is 100 m long. If the bus travels this distance in 15 minutes, w
    6·1 answer
  • What is the IMA of the following pulley system?<br><br>34567
    12·1 answer
  • Isla’s change in velocity is 30 m/s, and Hazel has the same change in velocity. Which best explains why they would have differen
    5·1 answer
  • A 30-mm-diameter copper rod is 1 m long with a yield strength of 70 MPa. Determine the axial force necessary to cause the diamet
    14·1 answer
  • Please help on this one?
    6·1 answer
  • Question 10 (1 point)
    5·1 answer
  • In a convex lense f=20cm, m=1,then what is u and v?​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!