4. A Formula 1 car accelerates from rest to 60.0 mi/hr in 2.60 s. What would be the final velocity of a Formula 1 car after 5.00 seconds when its starting velocity was 55.0 mi/hr?

This is how zirconium appears in the periodic table. rounded to the nearest whole number, how many electrons are in an atom of zirconium?

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.

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?