The formula for aluminium chloride will be correctly written as AlCl3.
Aluminium is a metal and in this reaction it is an electron donor. It has three electrons in its outermost shell and it is ready to give out all the three electrons to chlorine. Chlorine is a non metal and is an electron acceptor and it is more than ready to accept electrons from aluminium. But a chlorine atom can only receive only one electron from aluminium because, it already has seven electrons in its outermost shell and it only needs eight electrons in its outermost shell to be stable. To solve this problem, three chlorine atoms will react with one aluminium atom in order to accept all the three electrons from aluminium, hence the chemical formula AlCl3..
Answer:
E = 44 kV / m
Explanation:
In a capacitor the potential difference is
ΔV = -E x
E = - ΔV / x
Let's reduce to the SI system
x = 0.5 mm = 0.5 10⁻³ m
Let's calculate
E = 22 / 0.5 10⁻³
E = 44 10³ V / m
E = 44 kV / m
Note that this electric field is uniform
Answer:
No, it is not correct to say the Doppler Effect is the apparent change in the speed of a wave due to the motion of the source.
Explanation:
While Doppler Effect is due to motion of the source or observer but it is not the apparent change in the speed of the wave. The speed of the wave remains the same. It is the wavelength and frequency of the waves that change in Doppler Effect when there is a relative motion between source and observer.
100% True, as gravity has a force on everything in the universe
The amount of the
lighted side of the moon you can see is the same during first quarter
and third quarter phase. The answer is letter C. The moon surface is visible to an observer on earth due to the
gravitational force that attracts the moon to the earth. The more massive the
body is, the more the smaller body is attracted to the larger body. We can only
see the side of the moon due to the speed at which the moon rotates.
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