If the coolant in an air conditioner has a higher temperature than the air in a building, then a. heat will flow from the air into the coolant b. no heat flow will take place c. heat will flow from both the coolant and the air d. heat will flow from the coolant into the air

It's time for santa to deliver his presents. assuming he delivers presents all over the world, he has to travel about 75,000,000 miles. if he travels east to west, he can use the time zones to make christmas day last 31 hours. what speed, in miles per hour, must santa fly to get all of his presents delivered?