• Columbus State Community College

• PHYS 1200

EXAM 3.3: FLUIDS PHYS 1200: Prof. Kent Fisher Electronic sharing of this document or its contents, in whole or part, is prohibited BASIC Your team at the lab has developed a new and hopefully non-toxic liquid, named gloop by marketing, to be used in swimming pools. Gloop is denser than water, so it provides more buoyancy for swimming. (1) RNG An uwary visitor to the lab drops their tablet into an open tank of gloop. The gloop's density is 2000- 4000 kg/m3 , and the tank is 5-10 m deep. Calculate the total pressure the phone experiences at the bottom of the gloop tank. Keep in mind: we have an atmosphere! (2) RNG Choose a reasonable length L and width W for the tablet's screen (in SI units, to 3 SF), then calculate the force on the tablet's screen due to the pressure of the gloop. (3) MVQ, RNG Next, you'll be dipping a solid ball into the gloop. The ball is either plastic (mass m = 0.3-0.5 kg, radius r = 5-8 cm) if the 2nd-to-last digit of your phone number is even, or metal (odd digit, M = 50-60 kg, R = 11-13 cm). Calculate the ball's density. Tip: convert units first. (4) Would the ball float or sink if dropped into the gloop? Explain in 1-2 sentences, but no further calculations. (5) MVQ If you found that the ball would float in gloop, you're now going to push down on it, holding it at rest partly submerged, lower in the gloop than it would naturally float. Or, if you found that the ball would sink in the g