AbigailHaylei
19.10.2021 •
Physics
6 You are on a train travelling north at 80.0 m/s relative to the ground. The air is still relative to the ground when you hear the whistle of a train travelling south. You know that train whistles are emitted with a frequency of 262 Hz, but the whistle appears to have a frequency of 350 Hz. What is the speed of the other train
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Ответ:
For most everyday objects, scientists use a balance to obtain an object's mass. A balance compares an object with a known mass to the object in question. One example of a balance is the triple beam balance.