In which of the following elevator situations would the acceleration be positive. Select TWO answers

1. moving down at constant speed
2. moving up and slowing down
3. moving up at constant speed
4. moving down and slowing down
5. moving up and speeding up
6. moving down and speeding up

Which career professionals are part of the architecture and construction career cluster? check all that apply. a. civil engineers b. carpenters c. landscapers d. plumbers e. surveyors f. civil drafters

Under normal temperature and pressure conditions, what type of rock could be formed from weathering in erosion of metamorphic rock

Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.