Thickness of a material is a factor that affects heat conductivity. Does heat flow faster through a thick or a thin piece of the same material?

The position of a crate sliding down a ramp is given by x=(0.05t^3) m, y=(1.7t^2) m, z=(6−0.85t^5/2) m, where t is in seconds. (a) determine the magnitude of the crate's velocity when t = 2 s. (b) determine the magnitude of the crate's acceleration when t = 2 s.

Thermal radiation gets its name because

Elements that have one valence electron and are very reactive are called