Question

Multiple choice 1. For a system at hydrostatic equilibrium the pressure is always p = pgH + 1atm where p is the density, g is the gravitational constant, and H is the depth from the surface. a. True b. False 2. Room A and Room B are divided by a door of typical size (like the door to the classroom). The pressure difference between Room A and Room Bis 0.5 psi (pounds per square inch). The total force on the door is closest to hanging which object onto the door? a. a pencil (<0.11b) b. cell phone (-0.11b) c. Giancoli textbook (~11b) d. a car (~1000 lbs) 3. At what temperature is °C = °F? a. 0 b. 273 c. 100 d. -40

Answer 1

is 80, 2 . I atm. 9. Loe We know im normal temp. the air poressure any system which is in equilibrium with pressure p E egin) must have the total pressure TRUE) oght I alm pressore difference between the rooms 0.5 psi So, if a typical door has size 40 inch xogo total pressure 2017 x 40 x 80 porscal 1600 Paseals so, this much pressure only given by a Car 1000 lb pressure in 1000 lblinen 100 psi iners Ꮽ , Son

3. The melation between Fernenkite so the right option (d) a car cas (m 1000 lbs) and celcius stale is, clo terp F-32 9 Lets say is a the given 2-32 160 ད ། ༣ ཡཾ 9. x 15,5 x x = -40 40 night teup