What is the inverse tangent of 0.9?
O A. 64.2
O B. 90.0
O C. 42.0
O D. 0.016°

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.

Achild has maximum walking speed of 1.6 m/s. what is the length of the child's legs? 0.26 m

An element becomes a positively charged ion when itloses protons.loses electrons.gains electrons.gains neutrons.