Kinetic energy =1/2 mv^2
<span>m=2ke/v^2 </span>
<span>m=2(34)/3.6^2 </span>
<span>m=5.24 </span>
<span>force normal = mg </span>
<span>=5.24 x 9.8 </span>
<span>force normal = 51.4N
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i do believe the answer is c not sure but correct me if im wrong
They'll vibrate at their characteristic resonant frequency. That depends on the material the object is made of and its shape.
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i don't understand the hw
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