Question 1 (1 point) Calculate the density of a material with a volume of (3.90x10^2) cm and a mass of (2.410x10^0) kg. Give your answer in kg/m to three significant figures. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer Hide hint for Question 1 Start with the equation defining density. Be careful with units. Make sure everything is in SI units before calculating. Question 2 (1 point) You have (5.496x10^1) grams of a material with a density (9.00x10^2) kg/m. What is the volume in cubic meters? Give your answer with three significant figures. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: Answer x10 Hide hint for Question 2 Use the definition of density, and make sure you convert units to SI Question 3 (1 point) A piece of cork, mass (2.7x10^1) g, and density (4.700x10^2) kg/m, is completely immersed in water of density (1.007x10^3) kg/m. Calculate the magnitude of the buoyant force on the cork in Newtons to two significant figures. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: Answer x10 Hide hint for Question 3 Use Archimedes' Principle. As the cork is completely immersed, the volume of water displaced is equal to the volume of the cork. Question 4 (1 point) A horizontal pipe of cross-sectional area 29.9 m (A1 in the picture below) carries water at a pressure of 47.0 atm; the speed of the water at this point is 7.9 m/s. When the pipe becomes constricted such that its cross-sectional area A2 is only 10.3 m, what is the pressure of the water, P2 in atm? Note: 1 atm = 101,300 Pa, and the density of water is 1000 kg/m. Express your answer with two digits of precision. Hint: Use Bernoulli's equation, ignoring the gravity terms (since the height of the pipe does not change). You will first need to find the speed of the water in the constricted region (using the continuity equation) P A1 - Your Answer: Answer V2 Question 5 (1 point) The pulmonary artery, which pumps blood from the heart to the lungs, has an inner radius of 18.5 mm and is 5.40 cm long. If the pressure drop between the heart and lungs is 1,569 Pa, what is the volume flow rate of blood in the pulmonary artery? Give your answer in cm/s with two digits of precision. The viscosity of blood at 37C is 2.8 x 103 Pas. Your Answer: Answer Question 6 (1 point) Calculate the force (in Newtons) on a door with surface area 2.9 square metres at the International Space Station. Assume the pressure inside the space station is 105 kPa and the pressure outside is zero. Give your answer with a single digit of precision. Your Answer: Answer Question 7 (1 point) I dive down to a depth 19.5 metres beneath the surface of the ocean. Calculate the pressure in Pa at that depth, with zero digits of precision, assuming the density of water is 1.0103 kg/m, and the air pressure at the surface is 98 kPa. Your Answer: Answer Question 8 (1 point) A force of magnitude 424 N is exerted perpendicularly on an area 758 cm. Calculate the pressure in Pascals with one digit of precision. Your Answer: Answer Question 9 (1 point) I dive down to a depth 12 metres beneath the surface of the ocean. Calculate the pressure in Pa at that depth, assuming the density of water is 1.0103 kg/m, and the air pressure at the surface is 105.6 kPa. Give your answer with a single digit of precision. Your Answer: Answer View hint for Question 9 Question 10 (1 point) The pressure on a gauge reads 105.0 kPa. What is this value in atmospheres? Use three digits of precision in your answer. Your Answer: Answer