Longitudinal waves causes the medium to vibrate only in a direction parallel to the wave's motion
The number of protons in the nucleus dose not equal the number of neutrons.
The answer is; light waves, sound waves, and ocean waves.
Light waves come from the sun as electromagnetic transverse waves while the sound and oceans waves are mechanical waves. We interact with these very regulary in our lifetime. All these waves share the property of having frequencies, wavelengths and amplitudes.
A.
Polarized glasses allow vertical light in, blocking horizontal light so that most of the glare is eliminated.
I will discuss what is a gravitational force since no figures are attached or given. An objects weight is dependent upon its location in the universe
because they exhibit gravitational waves. For example, the earth is a massive
planet. Because of its massiveness, it exhibits a strong gravitational force
within it. In turn, the objects near the earth will be attracted to it and
thereby feels a much stronger gravity on earth. That is why bodies of water,
despite its liquid features, stick to the earth. The heavier the body is, the
stronger its gravitational pull. Another example is the Milky Way Galaxy, there is a
gravitational pull because it is to other galaxies. Also, other galaxies are
heavier than the earth and therefore, it is attracted to the Milky Way galaxy
because of its gravitational pull.