Một khung dây dẫn điện trở 1 ôm hình vuông cạnh 20cm nằm trong từ trường đều có mặt phẳng vuông góc với đường sức khi cảm ứng từ giảm dần từ 1T về 0 trong thời gian 0,1 s thì cường độ dòng điện là

Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius

Adiver named jacques observes a bubble of air rising from the bottom of a lake (where the absolute pressure is 3.50 atm) to the surface (where the pressure is 1.00 atm). the temperature at the bottom is 4.00 ∘c, and the temperature at the surface is 23.0 ∘c. what is the ratio of the volume of the bubble as it reaches the surface (vs) to its volume at the bottom (vb)? if jaques were to hold his breath the air in his lungs would be kept at a constant temperature. would it be safe for jacques to hold his breath while ascending from the bottom of the lake to the surface?

Another word for electromagnetic energy is a. heat b. force c. matter d. radiation