Physics, 04.12.2019 02:31 superstarsara5ouh83x
A1.00 kg chunk of an unknown metal that has been in boiling water for several minutes is quickly dropped into an insulating styrofoam beaker containing 1.00 kg of water at 18.0 ∘c. after gently stirring for 5.00 minutes, you observe that the water's temperature has reached a constant value of 22.0 ∘c . the specific heat capacity of water is cw = 4190 j/(kg⋅k) . assuming that the styrofoam absorbs a negligibly small amount of heat and that no heat was lost to the surroundings, what is the specific heat capacity of the metal cm?
find the temperature change of the water, δtw, and that of the metal, δtm.
express your answers in kelvins separated by a comma.
Answers: 3
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Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:
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A1.00 kg chunk of an unknown metal that has been in boiling water for several minutes is quickly dro...
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