A person with normal vision (near point 28cm) is standing in front of a plane mirror. What is the closest distance to the mirror the person can stand and still see himself in focus? A: 14cm
B: 28cm
C: 56cm
2. Briefly explain your reasoning.

Which subatomic particle has a negative charge

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.

What is a subatomic particle with a negative charge and very little mass?