The bob of a simple pendulum has a mass of 0.40 kg. The pendulum oscillates with a period of 2.0 s and an amplitude of 0.15 m.
At one point in its cycle it has a potential energy of 0.020 J.
What is the kinetic energy of the pendulum bob at this point?
A 0.024J
B 0.044 J
C 0.14 J
D 0.18 J

Ten students stand in a circle and are told to make a transverse wave. what best describes the motion of the students? each student bumps the shoulder of his or her neighbor. at the exact time, all students take a step to the right. the students skip clockwise, going in a circular motion. one at a time, each student lifts his or her hands up and then down.

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

Física: un futbolista patea hacia el arco con una velocidad de 15m/ah, calcular: a)el alcance para un ángulo de tiro de 25º, b) el tiempo que el balón permanece en el aire.