what is x2-5x+6={-3]2-5[-3}2-5{-3}+6=9-15+6=0
Answers
Answer:
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The coulomb force between two charges q1, q2 is:
F =kq1q2/r^2
k = coulomb’s constant = 1/4πεε0
ε0 = permittivity of empty space
ε = relative permittivity of the material in which the charges are immersed
r = distance between charges
for vacuum ε=1 and for air also, to a very good approximation ε=1.
For water , at room temperature ( 20C) ε = 80.
Therefore, the force between the charges q1, q2 will be 1/80 its value in air.
Hence Fw, the force in water will be:
Fw = 80/80 = 1N.
Answer:
In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity