A0.3 kg rubber ball is dropped from the window of a building. it strikes the sidewalk below at 30 m/s and rebounds up at 20 m/s. the magnitude of the impulse due to the collision with the sidewalk is:

Which of the following are properties of mechanical waves? check all that apply ⭕️ particles of the medium move back and fourth, but do not move with the wave. ⭕️ the particles of the medium always move parallel to the wave motion. ⭕️ wave motion begins with a disturbance in the medium. ⭕️ waves transport energy from a source outward, away from the source.

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

The particles that are found in the nucleus of an atom are