Cho hệ thống thùng lắc có mô hình tại vị trí đang xét như hình vẽ

Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates

Convection occurs when thermal energy is transferred by the movement of

By what primary heat transfer mechanism does the sun warm the earth?