Answer:
Answer is D
Explanation:
a and b have ignorance so we cancel them ,c has no knowledge so it's wrong and the remaining is D so D I the correct answer
Answer:
The answer is one and four.
Explanation:
I had this question on Edgenuity.
Solution:
Given:
Calcium and Oxygen ions each having valence = 2 or 2 valence electrons
seperation distance, r = 1.25nm = 
m
Coulombian force for two point charges seperated by a distance 'r' is given by:
F = 
(1)
Now, we know that
q = ne
where, n = no. of electrons
e = charge of an electron = 
C
= 
e = 2e
= 
e = 2e
Using Eqn (1)
F = 
F = 
N
Since, the force is between two opposite charged ions, it is attractive in nature.
The calculated answer is 4 kgf. The greatest resisting force that the walnut may exert before the nut cracks
In physics, resistive force is a a type of force, or the vector sum of the various forces, whose direction is opposite to the motion of a body, and may refer to: Friction, during sliding and/or rolling. During moving through a fluid, drag (physics) (see fluid dynamics). For all compression positions, the direction of specific deformation as a function of shell thickness and geometric mean diameter was identical to the direction of energy.
If load is 40 kgf and effort is?
effort arm=20 cm, load arm=2 cm
By the moments' principle,
effort arm equals load arm.
40kgf×2cm=E×10cm
∴E=40×220kgf=4kgf.
Learn more about Effort here-
brainly.com/question/9457233
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