Answer:
To write their letters home, soldiers purchased paper, envelopes, ink and pens from sutlers. Stationary makers printed many styles of patriotic stationary and envelopes with engravings of camp scenes or political humor and these were quite popular among soldiers.
Answer:
they're all the same? from what i see...
The objects that produce large amplitude waves are Stars, Large machines, Rocks falling from the mountain, Earthquakes, Volcanoes
The objects producing small amplitude waves include ping-pong ball, Tuning fork, stones, Speakers, Spring
<u>Explanation</u>:
The wave's amplitude is characterised by the ultimate displacement of an object from its median position. Generally, wave with high energy (or the waves emanating from big bodies or high energy bodies) are high amplitude waves. Since the body has a high amount of energy, it produces a comparatively large amount of displacement of the particle. hence the high amplitude.
Similarly, small bodies or bodies with less energy produces a low amplitude wave. This also can be understood in terms of displacement of the particle from its mean position.
