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
Physics, 22.06.2019 10:50
Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.
Answers: 3
Physics, 22.06.2019 16:10
Amass weighing 24 pounds, attached to the end of a spring, stretches it 4 inches. initially, the mass is released from rest from a point 8 inches below the equilibrium position. find the equation of motion. (use g = 32 ft/s2 for the acceleration due to gravity.)
Answers: 1
Physics, 22.06.2019 19:30
The ability to make things happen is also called a. heat b. force c. matter d. energy
Answers: 1
Physics, 22.06.2019 23:00
The statue of liberty is 305.5 feet high. when the angle of elevation of the sun is 50 , what is the distance to the tip of the shadow from a point at water level and directly below the highest point of the statue?
Answers: 3
A1.00 kg chunk of an unknown metal that has been in boiling water for several minutes is quickly dro...
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