Radial acceleration is = v^2/r
Therefore (8.8m/s)^2/(25m)= 3.10m/s^2
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A hot air balloon rises in the first place because the air inside is hot, which rises. So, if the air inside is not heated, it fails to rise and falls. Warm air rises because the particles get excited and jiggle with the heat, and cause the air to take up more space. So, as the surrounding air is probably colder and denser, the less dense hot air rises up in the hot air balloon.
Answer:
Explanation:
opposite charges attract
same charges repel
neutral charges don't attract or repel
4
Every current through a wire produced a magnetic field. And since the magnetic field of Earth is weak, it will get attracted towards the wire.