O
O
A. 0.2 m/s2
B. 120 m/s. 120 m/s2
O
C. 80 m/s. 120 m/s2
O
D. 5 m/s. 120 m/s2
Answer:
A. .2 M/s2
Explanation:
Force = mass x acceleration
The force is given as 20 N and tthe mass as 100kg
Solve for accelartion as 20/100 = .2
(Also wrong subject this is a Physics problem)
Answer:
The answer is 0.2m/s^2
Explanation:
As we all know that, Force=Mass* Acceleration
So, to make acceleration the subject of the formular, we have Acceleration=Force/mass
And we were given that, Force=20N
Mass=100kg
So, Acceleration= 20/100
=0.2m/s^2
-2
B.
-1
C.
+1
D.
+2
When a calcium atom loses two electrons, it becomes positively charged because it has more protons than electrons. In this case, since two electrons are lost, the calcium ion has a charge of +2.
When an atom loses or gains electrons, it undergoes a process called ionization, resulting in the formation of an ion. In the case of calcium (Ca), it typically loses two electrons to achieve a more stable electron configuration.
A neutral calcium atom has 20 electrons, with the electronic configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 4s². By losing its two outermost electrons from the 4s orbital, it forms a calcium ion (Ca²⁺) with 18 electrons.
The loss of two negatively charged electrons leaves the calcium ion with a net positive charge. The charge on an ion is indicated by a superscript after the ion symbol. In this case, the superscript is +2, denoting that the calcium ion has a charge of +2.
Hence, the correct answer is +2.
Learn more about electrons here:
#SPJ 6
CH4 compound is formed by sharing of electrons with hydrogen atom. They are bonded by ionic bonds. They undergo sp^3 hybridization.
Explanation:
The group 4A elements have 4 electrons in their valence shell or highest energy orbitals ie 2s^2, 2p^2
They share electrons from other elements thereby stabilising their valence shell and form bonds between them. The bonds can be covalent or ionic. It undergoes sp^3 hybridization.
The four valence electrons of the carbon atom are distributed equally in the hybrid orbitals, and each electron of carbon pairs with an electron of hydrogen atom when the C–H bonds form.