Apiece of nickel at 25 °c is dropped into a glass of water at 25 °c. which statement is correct? a. heat will flow from the nickel to the water in the glass. b. heat will flow from the water in the glass to the nickel. c. there will be no transfer of heat from the nickel to the water in the glass. d. the final temperature of water and nickel will be 0 °c. two identical metal spheres at 8 °c are put into two beakers with equal amounts of water, as shown below. two beakers are side by side; one is labeled beaker a and the other is labeled beaker b. both beakers are the same shape, size, and are about two-thirds full with water. both beakers have a metal sphere with a temperature of eight degrees celsius submerged in the water. heat flows from the metal spheres to the water in beaker a and beaker b. which statement is correct? a. the temperature of the water in both beakers is lower than 8 °c. b. the temperature of the water in both beakers is greater than 8 °c. c. the temperature of the water in both beakers will decrease. d. the temperature of the metal spheres in both beakers will increase.
Answers: 1
Physics, 21.06.2019 20:20
Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?
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Physics, 22.06.2019 10:00
Which atomic model was proposed as a result of j. j. thomson’s work?
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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 13:10
A0.750 kg aluminum pan is removed from the stove and plunged into a sink filled with 10.0 kg of water at 293 k. the water temperature quickly rises to 297 k. what was the initial temperature of the aluminum pan? the specific heat of aluminum is ca = 900 j/(kgk) and water is cw = 4190 j/(kgk)
Answers: 3
Apiece of nickel at 25 °c is dropped into a glass of water at 25 °c. which statement is correct? a....
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