A mass of 10 kg, which may be a point-like object, is attached to a rope of length 1.5 m and is being
rotated. What is the moment of inertia of the object?
A. 3.16 m
B. 1.44 kg m 2
C. 22.5 kg. m2
D. 0.04 kg​

the answer is neither ball has a charge.

because if they were both positively charged, they will repel each other.

if they were positively and negatively charged, they will seek.

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answer: the potential energy decreases from 379 j to 243 j

explanation:

for the law of conservation of energy, the total energy in a system must be conserved. the total energy of the system is given by the sum of kinetic (k) and potential (u) energy:

e = k + u

the total energy is e=675 j, and this does not change.

initially, the kinetic energy is k=296 j, so the potential energy is

at the end, the kinetic energy is k=432 j, so the potential energy is

so, we see that the potential energy has decreased from 379 j to 243 j.