You drop a 2.10 kg book to a friend who stands on the ground at distance D = 12.6 m below with outstretched hands at distance d = 1.46 m above the ground. (a) What is the speed of the book when it reaches the hands? m/s (b) If we substituted a second book with twice the mass, what would its speed be? m/s (c) If, instead, the book were thrown down, would the answer to (a) increase, decrease, or remain the same?
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Ineed ! using proper grammar, spelling, and punctuation, write at least one 5 sentence paragraph describing 3 ways we use the elements of the electromagnetic spectrum (ems) in our everyday lives.
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Asmall grinding wheel has a moment of inertia of 4.0×10−5 kg⋅m2 . what net torque must be applied to the wheel for its angular acceleration to be 150 rad/s2 ?
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When you see distant streetlights through smog, they look dimmer and redder than they do normally. but when you see the same streetlights through fog or falling snow, they look dimmer but not redder. use your knowledge of the interstellar medium to discuss the relative sizes of the particles in smog, fog, and snowstorms compared to the wavelength of light.
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You drop a 2.10 kg book to a friend who stands on the ground at distance D = 12.6 m below with outst...
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