PRACTICE ABuoyant Force1. A piece of metal weighs 50.0 N in air, 36.0 N in water, and 41.0 N in anunknown liquid. Find the densities of the following:a. the metalb. the unknown liquid2. A 2.8 kg rectangular air mattress is 2.00 m long, 0.500 m wide, and0.100 m thick. What mass can it support in water before sinking?3. A ferry boat is 4.0 m wide and 6.0 m long. When a truck pulls onto it, theboat sinks 4.00 cm in the water. What is the weight of the truck?4. An empty rubber balloon has a mass of 0.0120 kg. The balloon is filledwith helium at 0°C, 1 atm pressure, and a density of 0.179 kg/m. Thefilled balloon has a radius of 0,500 m.a. What is the magnitude of the buoyant force acting on the balloon?(Hint: See Table 1 for the density of air.)b. What is the magnitude of the net force acting on the balloon?

Water exerts a buoyant force to the metal =50−36=14N, which equals the weight of water displaced.…

Answered: 1. A piece of metal weighs 50.0N in…

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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4. Materials: Steel, Brass, Copper, Aluminum, Acrylic, Oak, Nylon, Pine, Poplar, PVC, Triple Beam Balance, Graduated Cylinder. 5. Procedures- Steps you took. A. Substance 1 1. Fill the graduated cylinder to 20 mL. 46g 2. Find the mass of the substance 3. Put the substaņce in the graduated cylinder and record how much water it displaces. 15.6 cms 4. Calculate the density of the substance. (D=M/V) 5. 6. Identify the substance. B. Substance 2 Fill the graduated cylinder to 20 mL. 8. Find the mass of the substance d 1.5q 9. Put the substance in the graduated cylinder and record how much water it 7. 1775g displaces. 15. 6 cm3 10. Calculate the density of the substance. (D=M/V) 11. 12. Identify the substance.
1. If an immersed object displaces 8 N of fluid, what is the buoyant force on the block?EXPLAIN. 2. How should you place a screw on a table such that it exerts the smallest pressure against it?.EXPLAIN WHY. 3. An object with a volume of 100cm^3 is submerged in a swimming pool. What is the volumeof water displaced?. Why?. 4. You apply a flame to 1 L of water for a certain time and its temperature rises by 2°C. If youapply the same flame for the same time to 2L of water, by how much does its temperaturedecrease? . Why? 5. Which has greater kinetic energy? A) a car traveling at 30 km/hr. B) a car of half the mass traveling at 60 km/hr C) both the same. D) need more information EXPLAIN. 6. A melon is projected into the air with 100 J of kinetic energy in the presence of air resistance.When it returns to its initial level its kinetic energy isA) less than 100 J.B) more than 100 J.C) 100 J.D) need more informationEXPLAIN 7. Two identical golf carts move at different speeds. The faster cart…
5 How high would the level be in a gasoline-filled barometer (as shown in the figure below) at a pressure of 0.443 atm? The mass density of gasoline is 737 kg/m3. Assume that the vapor pressure of gasoline in the closed end of the barometer’s tube is negligible. Group of answer choices 60.9 m 6.21 m 4.58 m 14.0 m 2.77 m
Air has density of 1.293 g/cm3 at 20 degrees C. What is the mass of air that occupies a volume of 320 cm3? A) 413.g B) 0.004 g C) 320 g D) 247.5 g
1. If a closed cylinder has an applied force of 7600N, and the pressure is 40kPa, what is the area.? 2. Find the force, in Newtons, for a glass box with a gas that has a pressure of 125N/m2 and an area of 22.4 m2.
2.A liquid in a tube has a mass m and a volume V. If the liquid density is 3.00 grams/L and its volume is 9.00 L then what is its mass? a. 18.0 grams b. 0.333 gram c. 333 grams d. 3.00 grams e. 27.0 grams
QUESTION 33 Calculate the pressure when a 500 Newton block is sitting on one of its sides, which has an area of 0.5 m2 . a. 1000 pascals b. 202 pascals c. 2000 pascals d. 500 pascals

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1. A piece of metal weighs 50.0N in air, 36.0 N in water, and 41.0 N in an unknown liquid. Find the densities of the following: a. the metal b. the unknown liquid