Задача id17189
The ultrasonic ceramic transducer is placed in castor maxiao. What proportion of energy is transferred to the oil? The density of ceramics is 2.8 103 kg/m3, the speed of sound in it is 6.2 103 m/s.
Answer. Format gif
Оплата и выдача товара осуществляются через партнёрскую платформу.