Груз массой 20 кг поднимают с помощью системы бар, (см. рис.). Определите выигрыш в силе в каждом случ».
Чему равна сила натяжения каната?

9.98 kg of r-134a at 300 kpa fills a rigid container whose volume is 14 l. determine the temperature and total enthalpy in the container. the container is now heated until the pressure is 600 kpa. determine the temperature and total enthalpy when the heating is completed. use data from the steam tables.

Which planet do you think would be easiest for humans to colonize some day?

Astudent weighing 700 n climbs at constant speed to the top of an 8 m vertical rope in 10 s. the average power expended by the student to overcome gravity is most nearly