The distance s (in latex: m m ) above the ground for a projectile fired vertically upward with a velocity of 4latex: \left[a\right] [ a ] latex: m/s m / s as a function of time t (in latex: s s ) is given bylatex: s=4\left[a\right]t-4.\left[b\right] t^2 s = 4 [ a ] t − 4. [ b ] t 2 . your instructor will provide you with a and b. find the answers to these questions. find latex: t t for latex: v=0 v = 0 find latex: v v for latex: t=4 t = 4 find latex: v v for latex: t=5 t = 5 what conclusions can you draw?

Acharge of 8.4x10^-4 c moves at an angle of 35 degrees to a magnetic field that has a field strength of 6.7x10^-3 t. if the magnetic force is 3.5 x10 ^-2 n, how fast is the charge moving?

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.

Afrequency generator sends a 550 hz sound wave through both water and ice. what is the difference in wavelength between the wave produced in ice and the wave produced in water?