1.Identify unknown nuclear reaction products
9 4Be+1 1H -> X+4 2He
2.Add missing notation
X+ 1 1H -> 3 2 He+γ

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Chameleons catch insects with their tongues, which they can rapidly extend to great lengths. in a typical strike, the chameleon's tongue accelerates at a remarkable 220 m/s2 for 20 ms, then travels at constant speed for another 30 ms.

Describe how the motion of a spring being pushed forward and backward is similar to the motion of air particles in a sound wave.