She wants to calculate the density of one of these cubes. Blessy needs to measure two physical quantities.
One of these is the mass of the cube.
(a) Describe how she finds the mass of the cube.

What are the three ways that an object can accelerate

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.

What is the coefficient of kinetic friction μk between the block and the tabletop?