A student goes for a run outside during a cold day. The air temperature is 277°K and at the end of the run, the student’s skin temperature is 310.5°K. Determine the total energy transferred from the student’s body due to radiation if they stayed outside for 5 minutes after the run. Skin emissivity is 0.95, and the surface area is 1.47 m^2 .

Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2

Select any two (2) areas of applications of chain-drive. (clo4) a)-permanent lubrication necessary b)-hydraulic forklift truck operation c)-rigging and heavy moving materials d)-relatively high maintenance costs e)-costlier than belt drives

What are the major differences between injection molding and extrusion?