-- There are 80 protons in the nucleus of every atom of Mercury,
but only 8 of them in the nucleus of an atom of Oxygen.
-- Mercury must be warmer than 357°C in order to boil, but Oxygen
must only be warmer than -183°C.
-- Mercury must be colder than -39°C in order to freeze, but Oxygen
must be colder than -219°C.
-- Oxygen is required for human life. Mercury is a deadly poison.
The amount of extra electrons present on the negative surface is
57.2 x 
.
Distance =1.6 cm
Side = 24 cm
Electric field = 18000 N/C
Calculating the capacitance in the metal plates is necessary.
Using the capacitance formula
Putting the value
C = 8.85 x 
x (24 x 
/1.6 x
C = 0.318 x 
F
<h3>Calculation of potential</h3>
V = Ed
V = 18000 x 1.6 x V
V = 288 V
<h3>Calculation of charge</h3>
Q = CV
Q = 0.318 x x 288
Q = 91.54 x C
Charge on the both the plates
Q = +91.54 x
Q = - 91.54 x
Calculation of excess electrons on the negative surface:
n = q/e
n = 91.54 x / 1.6 x 
n = 57.2 x electrons
Hence, the number of excess electrons on the negative surface is
57.2 x .
Learn more about capacitance here:
brainly.com/question/14746225
#SPJ4
Answer:
v = 282.84 m / s
Explanation:
The speed of a wave in a wire is given by the equation
.v = √ T /ρ
Where v is the speed of the wave, T the tension in the wire and ρ the density of the wire
If the tension is doubled
T = 2T₀
v = √ (2T₀ / ρ)
v = √2 √ T₀ / ρ
v = √2 v₀
calculate
v = √2 200
v = 282.84 m / s
After the ball reaches the top and begins its return back down, it's just a falling object that's been dropped.
The amount that its downward speed increases every second is just the acceleration of gravity on Earth.
That's <em>9.81 meters per second</em> every second.
I cant see the image for some reason. Mind reuploading?
