The air in your classroom has a.) mass
b.) volume
c.) weight
d.) all of the above
e.) none of the above

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

Aparticle moves in the xy plane with constant acceleration. at time zero, the particle is at x = 6 m, y = 8.5 m, and has velocity ~vo = (9 m/s) ˆı + (−2.5 m/s) ˆ . the acceleration is given by ~a = (4.5 m/s 2 ) ˆı + (3 m/s 2 ) ˆ . what is the x component of velocity after 3.5 s? answer in units of m/s.

Observations show that interstellar clouds can have almost any shape and