What formula gives the strength of an electric field, E, at a distance from a known source change?
2 answers:
<u>Answer:</u>
The correct answer option is C. E = kq / d^2
<u>Explanation:</u>
Electric field strength is a vector quantity which means it has both the magnitude and a direction.
It can be defined as the strength of electrical force per unit charge at any given point in the electric field and can be denoted by E.
Therefore, the formula for the electric field strength is:
E =
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Answer:
38.47 m
Explanation:
To find the height of the building, we will use the following equation
Where yf is the final height, yi is the initial height, viy is the initial vertical velocity, t is the time, and a is the acceleration due to gravity.
If the brick is in flight for 3.1 s, we can say that when t = 3.1s, yf = 0 m. So, replacing
viy = (16 m/s)sin(10) = 2.78 m/s
a = -9.8 m/s²
we get
Solving for yi
Therefore, the height of the building is 38.48 m
Answer:
1.2826 x 10^-13 m
Explanation:
Here, k be the kinetic energy and m be the mass
K = 50 KeV = 50 x 1.6 x 10^-16 J = 80 x 10^-16 J
m = 1.67 x 10^-27 kg
λ = 1.2826 x 10^-13 m