Answer:
A.) the inverse of the square of the distance separating them
Explanation:
Coulombs law states that "the force of attraction between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them."
Mathematically, F = kq1q2/r²
Where q1 and q2 are the charges
r is the distance between the charges.
According to the law, the force between two charged objects is related to the inverse of the square of the distance separating them.
15 to 35 degrees of equator
Answer:
18.8m
Explanation:
This implies calculating the relative speed first then find the distance d
So
relative speed = 2.75- 1.25 = 1.5 m/s
So assume the distance between them to be say d
so, d/1.5= 12.5
d = 18.8m
Answer: 20 meters
Explanation:
This situation is related to vertical motion, especifically an object in free fall, and the parametric equation that describes this motion is:
![y=y_{o}+V_{o}t-\frac{g}{2}t^{2}](https://tex.z-dn.net/?f=y%3Dy_%7Bo%7D%2BV_%7Bo%7Dt-%5Cfrac%7Bg%7D%7B2%7Dt%5E%7B2%7D)
Where:
is the stone's final height
is the stone's initial height
is the initial speed of the stone
is the time the stone is falling
is the acceleration due gravity
Isolating
according to the given information:
![y_{o}=\frac{g}{2}t^{2}](https://tex.z-dn.net/?f=y_%7Bo%7D%3D%5Cfrac%7Bg%7D%7B2%7Dt%5E%7B2%7D)
![y_{o}=\frac{10 m/s^{2}}{2}(2 s)^{2}](https://tex.z-dn.net/?f=y_%7Bo%7D%3D%5Cfrac%7B10%20m%2Fs%5E%7B2%7D%7D%7B2%7D%282%20s%29%5E%7B2%7D)
Finally:
This is the distance the stone fell
Answer:
a) 1511 MW
b) 44%
Explanation:
The thermal power will be the electric power plus the heat taken away by the cooling water.
Qt = P + Qc
The heat taken away by the water will be:
Qc = G * Cp * (t1 - t0)
The Cp of water is 4180 J/(kg K)
The density of water is 1 kg/L
Then
G = 1.17 * 10^8 L/h * 1 kg/L * 1/3600 h/s = 32500 kg/s
Now we calculate Qc
Qc = 32500 * 4180 * (29.8 - 23.6) = 842*10^6 W = 842 MW
The total thermal power then is
Qt = 669 + 842 = 1511 MW
The efficiency is
η = P / Qt
η = 669 / 1511 = 44%