Which of the following objects has the greatest kinetic energy?
a baseball flying throu...
Physics, 17.01.2020 01:31 Natasha019
Which of the following objects has the greatest kinetic energy?
a baseball flying through the air at 20 miles per hour
a baseball flying through the air at 90 miles per hour
a baseball sitting on the ground
a baseball flying through the air at 45 miles per hour
Answers: 1
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True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.
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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.
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