b. They travel through the object they hit.
c. They bend when they hit the medium.
d. They bounce off the object they hit.
The period of simple harmonic motion remains unchanged when the mass of the object is doubled.
Simple harmonic motion (SHM) is a type of periodic motion where an object oscillates back and forth around a fixed point in a regular and repeated manner. It is a special case of periodic motion, characterized by a restoring force that is proportional to the displacement from the equilibrium position. The classic example of SHM is a mass-spring system, where a mass is attached to a spring and is subjected to a restoring force proportional to the displacement from its rest position.
In SHM, the motion is always sinusoidal and the period of the motion is constant, which means that the time for one complete cycle of the motion remains the same. This type of motion is important in a variety of physical systems, including the vibration of mechanical systems, the oscillations of electrical circuits, and the motion of particles in a gravitational field.
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Answer:99.33
Explanation: