The only form of heat transfer that does not require matter

Ablock of mass 1.5 kg slides down an inclined plane that has an angle of 15. if the inclined plane has no friction and the block starts at a height of 3 m, how much kinetic energy does the block have when it reaches the bottom? acceleration due to gravity is g = 9.8 m/s2. a. 6.8 j b. 50.9 j c. 0 j d. 44.1 j

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

How does an observation about an object differ from an inference about that object