(II) On dry land, an athlete weighs 70.2 kg. The sameathlete, when submerged in a swimming pool and hangingfrom a scale, has an "apparent weight" of 3.4 kg. UsingExample 10-8 as a guide, (a) find the total volume V of thesubmerged athlete. (b) Assume that when submerged, theathlete's body contains a residual volume VR = 1.3 × 10-³ m³of air (mainly in the lungs). Taking V – Vg to be theactual volume of the athlete's body, find the body's specificgravity, SG. (c) What is the athlete's percent body fatassuming it is given by the formula (495/SG) – 450?|lift

The mass of the athlete on the land, m=70.2 kg The mass of the athlete when submerged in the…

Answered: (II) On dry land, an athlete weighs…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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(c) Water with a kinematic viscosity of v= 1.053 x 10 m² s1 and velocity of v= 2.5 m s¹ flows across a flat plate with a surface roughness of ε = 0.046 mm. Would the fluid boundary layer at a distance of x = 0.5 m from the leading edge be less than that of the surface roughness? How would this affect the head loss across the plate? Show with suitable calculations your reasoning.
(II) A -in. (inside) diameter garden hose is used to fill a round swimming pool 6.1 m in diameter. How long will it take to fill the pool to a depth of 1.4 m if water flows from the hose at a speed of 0.40 m/s?
a xylem tube is of radius 2.50×10−5 m . Verify that such a tube raises sap less than a meter by finding h for it, making the same assumptions that sap’s density is 1050 kg/m3 , its contact angle is zero, and its surface tension is the same as that of water at 20.0º C .
A living room has floor dimensions of 5 m and 4 m and a height of 4 m. (How much the air in the room weigh, when the air pressure is 1.0 atm? (1 atm = 1.01 10° Pa). The density of air at 1.0 atm 1.21 kg/m². (i) What is the magnitude of the atmosphere's downward force on the top of a person's head with an area of 0.035 m²? When an object is kept in salted water, the volume of the displaced fluid is 0.03 m³. Find the mass of the displaced fluid and Buoyant force Assume the salted water has a density of 1020 kg/m³. Differentiate between the following: () Steady and unsteady flow () Uniform and non-uniform flow () Stream line and turbulent flow
The vapor pressures of a halogen compound in its solid and liquid phases display the following temperature dependence: p(s) 4012 K T solid- liquid- In 1 bar (1) P 1 bar 18.316- = 11.247- 2589 K T where T is in K. (a) Determine the temperature of the triple point (in K).
Q. 7. (a) (i) Determine the maximum time for rapid closure of pipe 60 cm diameter, 450 m long made of steel (E = 2.07 x 1011 N/m²) with a wall thickness of 1.25 cm. The pipe carries a liquid of specific gravity 0.88 and bulk modulus (4) K = 1.03 x 109 N/m2 flowing at 1 m /sec. (E = Young's modulus of steel) %3D
(a) A 93.0 kg man floats in fresh water with 3.00% of his volume above water when his lungs are empty, and 5.00% above water when his lungs are full. Calculate the volume of air he inhales—called his lung capacity—in liters. L (b) Does this lung volume seem reasonable? NoYes
•35 Three children, each of weight 356 N, make a log raft by lashing together logs of diameter 0.30 m and length 1.80 m. How many logs will be needed to keep them afloat in fresh water? Take the den- sity of the logs to be 800 kg/m?.
A person weighing 75 kg is standing on a three-legged stool. The stool momentarily tilts so that the entire weight is on one foot. If the contact area of each foot is 5.0 cm2, calculate the pressure exerted on the underlying surface in (a) bars, (b) atmospheres, and (c) pounds per square inch.
The weight of a car of mass 1.20 × 103 kg is supported equally by the four tires, which are inflated to the same gauge pressure. What gauge pressure in the tires is required so the area of contact of each tire with the road is 1.00 × 102 cm2? (1 atm = 1.01 × 105 Pa.)"
A typical hot air balloon can carry 3–5 passengers in a wicker basket and has a total mass of m = 470 kg including passengers, not including the mass of air inside the balloon. The density of hot air inside the stationary balloon is ?hot = 0.960 kg/m3 and the density of the cooler outside air is ?cool = 1.22 kg/m3. Determine the volume of hot air required for the balloon to be in equilibrium so that it neither sinks nor rises in the air.
(A)Wood sphere float in oil with 60 percent of its volume submerged. And in glycerin with 30 percent of its volume submerged .determine the densities of the glycerin and the sphere .explain with schematic

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