Một kho thuốc vào thời điểm G người ta ghi nhận : to kho là 22oC, có φ = 90%, cho biết kho có kích thước là 10 x 15 x 6m và K = 0,35. Hỏi trong kho đang có bao nhiêu hơi nước ?

As shown in fig. p3.64, a closed, rigid tank fitted with a fine-wire electric resistor is filled with refrigerant 22, initially at 2108c, a quality of 80%, and a volume of 0.01 m3. a 12-volt battery provides a 5-amp current to the resistor for 5 minutes. if the final temperature of the refrigerant is 408c, determine the heat transfer, in kj, from the refrigerant.

How are calculation for velocity and speed different

What do you think car designers do if the damage caused by a crash test is too severe?