Twenty is the atomic number of potassium.
So he has 7 sheepleft if i did it correctly
15-8=7
Answer:
that would probably be Rock A is harder than Rock B
Explanation:
Because if Rock A can scratch Rock B then it obviously means that Rock A is harder.
Right?
Hope This Helps You Out♡
Answer:
Moving a unit "positive" test charge from A to B will result in a reduction in potential
V = K Q / R potential at a point
V2 - V1 = K Q (1 / .4 - 1 / .15) = = k Q (.15 - .4) / .06 = -4.17 K Q
V2 - V1 = -4.17 * 9 & 10E9 * 6.25 E-8
V2 - V1 = -4.17 * 562.5 J/C
V = - 2346 Volts
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