Select all of the following that are equal to an impulse of 20 units. A. Force = 0.1, time = 200
B. Force = 5, time = 5.5
C. Force = 10, time = 2
D. Force = 25, time = 0.8

In order for a high temperature boiler or steam engine to produce superheated water, or steam: the heat source must be greater than 100°c the water must be permitted to evaporate quickly the system must be sealed and become pressurized above atmospheric pressure the vapor pressure must be kept below 760 mm(hg)