A= v²/R
a = 12²/30 =4.8 m/s²
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Explanation:
An object's weight depends on the pull of the gravitating object but the object'<u>s mass is independent of the gravity. </u>
Alkali
The alkali metals are six chemical elements in Group 1, the leftmost column in the periodic table. They are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).
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Infrared light has longer wavelengths than gamma rays, X-rays, ultraviolet light, and visible light, but shorter wavelengths than microwaves, radar, GPS, cellphone, TV, radio, ocean, audible sound, ultrasound, seismic, guitar-string, and Slinky™ waves.
