Câu 1:Nêu sự phụ thuộc của điện trở vào vật liệu làm dây dân
Câu 2:công thức tính điện trở

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

Which graph represents motion with an object with positive velocity that is located at a position of 3 meters at a time of 0 seconds? a) a b) bb eliminate c) c d) d

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.