Q. The x, y, and z components of a particle's velocity are -1.0, 3.5, and -6.0 respectively. What is the velocity in the z direction?
Q. Your 300 ml cup of coffee is too hot to drink when served at 92.0 C.What is the mass of an ice cube, taken from a -19C freezer, that will cool your coffee to a pleasant 61C?