About how many calories are required to convert 2 g of ice at 0°c to water vapor at 50°c ?.

Which two statements are true about a system? 1. a system is a group of objects analyzed as one unit. 2. energy that moves across system boundaries is conserved. 3. there’s only one way to define the boundaries of a system. 4. all systems are made by humans.

May all the sweet magic of christmas conspire to fill every desire..❤️ merry christmas! ❤️_❤️

You are getting ready to transport troops in a m1152 configured with cargo cover and troop seats which of the following should you do before starting out