After making himself 0.2 kg of hot chocolate (mostly water), Jeff finds that it is too hot (60°C), so he adds 0.05 kg
of milk at 15°C. The specific heat capacity of milk is 3800 J/kg°C. What is the final temperature of the hot
chocolate with the milk added? And please show your work

Asimply means that over time there was some sort of change.

You notice a very one-dimensional-thinking snail crawling along one rail of a railroad track. naturally, you remove it to a safer place. but before you do, you observe it as it moves from position xi = -92.9 cm to position xf = -64.9 cm along the rail, as measured from a point where one rail abuts the next. what is the snail\'s displacement δx in centimeters?

Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.