The "steam" above a freshly made cup of instant coffee is really water vapor droplets condensing after evaporating from the hot coffee. what is the final temperature of 250 g of hot coffee initially at 90.0ºc if 2.00 g evaporates from it? the coffee is in a styrofoam cup, so other methods of heat transfer can be neglected. (answer in ºc)
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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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