the table shows the charges and the distance between five different pairs of objects.\n| charge 1 | charge 2…

the table shows the charges and the distance between five different pairs of objects.\n| charge 1 | charge 2 | distance | force |\n| ---- | ---- | ---- | ---- |\n| q | q | d | f |\n| q | 2q | d | w |\n| q | q | 2d | x |\n| 3q | q | d | y |\n| q | q | 3d | z |\nif the force between two charges, q, separated by a distance, d, is f, what is the list of the other forces, from greatest to least?\no y, z, w, x\no y, w, x, z\no z, y, w, x\no z, x, w, y
Answer
Explanation:
Step1: Recall Coulomb's law
The force between two charges $q_1$ and $q_2$ separated by a distance $r$ is given by $F = k\frac{q_1q_2}{r^{2}}$, where $k$ is a constant. For the first - pair with $q_1 = q$, $q_2 = q$ and $r = d$, $F=k\frac{q\times q}{d^{2}}$.
Step2: Calculate $W$
For the second - pair with $q_1 = q$, $q_2 = 2q$ and $r = d$, $W = k\frac{q\times2q}{d^{2}}=2k\frac{q^{2}}{d^{2}} = 2F$.
Step3: Calculate $X$
For the third - pair with $q_1 = q$, $q_2 = q$ and $r = 2d$, $X=k\frac{q\times q}{(2d)^{2}}=\frac{1}{4}k\frac{q^{2}}{d^{2}}=\frac{1}{4}F$.
Step4: Calculate $Y$
For the fourth - pair with $q_1 = 3q$, $q_2 = q$ and $r = d$, $Y = k\frac{3q\times q}{d^{2}}=3k\frac{q^{2}}{d^{2}} = 3F$.
Step5: Calculate $Z$
For the fifth - pair with $q_1 = q$, $q_2 = q$ and $r = 3d$, $Z=k\frac{q\times q}{(3d)^{2}}=\frac{1}{9}k\frac{q^{2}}{d^{2}}=\frac{1}{9}F$.
Step6: Compare the forces
Comparing the values of $W = 2F$, $X=\frac{1}{4}F$, $Y = 3F$, $Z=\frac{1}{9}F$, we have $Y>W>X>Z$.
Answer:
Y, W, X, Z