What is the potential energy of a spring that is compressed 0 point 6 5 m by a 25 kilograms block if the spring constant is 95 cap n over m ?

Spring potential energy is calculated with PE = ½kx², where k = 95 N/m and the compression is x = 0.65 m. Substituting gives PE = ½(95)(0.65)² ≈ 20.1 J, which rounds to 20 J. The block’s mass is not needed for this calculation, so the correct choice is 20 J.

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