Answer:
i) Q' = Q/2.
ii) If the wires to the battery are disconnected, the amount of charge on the plates remains constant, and the voltage across the plates remains the same.
Explanation:
i) The formula for capacitance is given as
C = A/d
Where d = separation between the plates
The formula for the charge stored is given as
Q = CV
Q = AV/d
When "d" is doubled, the charge stored "Q" becomes half because Q is inversely proportional to the separation between the plates, d.
Thus, Q' = Q/2.
ii) If the wires to the battery are disconnected, the amount of charge on the plates remains constant, and the voltage across the plates remains the same.
Answer:
A) True, B) False, C) False and D) false
Explanation:
Let's solve the problem using the law of conservation of energy to know if the statements are true or false
Let's look for mechanical energy
Initial
Emo = Ke = ½ k Dx2
Final
Em1= ½ m v12
Emo = Em1
½ k Δx2 = ½ m v₁²
v₁² = k / m Δx²
v₁ = √ k/m Δx
Now let's calculate the speed when it falls
Vfy² = Voy² - 2gy
Vfy² = - 2gy
Vf² = v₁² + vfy²
A) True v₁ = A Δx
.B) False. As there is no rubbing the mechanical energy conserves
.C) False the velocity is proportional to the square root of the height
v2y = v2 √2
. D) false promotional compression speed
Answer:
Explanation:
Given data:
temperature of water vapor is 200 degree F
pressure is 1 atm
\from the standard water temperature tables , at temperature 200 degree F
at temp 200 degree F and
so relative humidity is given as
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Using Kepler's third law which is defined as the square of the average distance is directly proportional to the cube of the period. It is expressed as P^2 = a^3, Given that the a = average distance is given, the period would be much easier to compute. P = sqrt(27^3) = 140
