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Why is copper a pure substance? A. Because it is an element B. Because it is a compound C. Because it is a homogenous mixture
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Bone-strengthening physical activity done increases bone-mineral content and bone density in youth.
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The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is transformed ⇒ as it changes into other forms of energy.
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The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.
Answers: 1
Why is copper a pure substance? A. Because it is an element B. Because it is a compound C. Because i...
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