
Question 10 An object has 12 J of kinetic energy, 7 J of gravitational potential energy,...
A)An object of volume 7.50×10−4m3 and density 1.15×103kg/m3 is completely submerged in a fluid. Calculate the weight of this object. B)Calculate the buoyant force on this object if the fluid is air (density 1.20 kg/m3). C)Calculate the buoyant force on this object if the fluid is water (density 1.00×103kg/m3). D)Calculate the buoyant force on this object if the fluid is glycerin (density 1.26×103kg/m3)
3. Archimedes' Principle states that the buoyant force on an object partially or fully submerged in a fluid is equal to the weight of the fluid that the object displaces. For an object of density po floating partly submerged in a fluid of density pf, the buoyant force is given by F P19 SA(y)dy, where g is the acceleration due to gravity and A(y) is the area of a typical cross-section of the object. The weight of the object is...
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QUESTION 10 A gold brick measures 10.0 cm by 12.0 cm by 30.0 cm and has a density of 19,300 kg/m3. What is its weight (in N)? QUESTION 11 If the gold brick from the previous problem were submerged in water (density 1,000 kg/m3, what would the magnitude of the buoyant force (in N) on the brick be? QUESTION 12 If the gold brick from the previous problems were placed on a scale while submerged in water, what...
1. Is it possible for a system to have negative gravitational potential energy? a) Yes, as long as the kinetic energy is positive. b) Yes, as long as the total energy is positive. c) Yes, since the choice of zero of gravitational potential energy is arbitrary. d) No, because the kinetic energy of a system must equal its gravitational potential energy. e) No, because you can't have negative energy. 2. In an isolated system, for which of the following types...
An object has a kinetic energy of 234 J and a momentum of magnitude 29.0 kg · m/s. (a) Find the speed of the object. ____m/s (b) Find the mass of the object. ____kg A rifle with a weight of 20 N fires a 5.3-g bullet with a speed of 260 m/s. (a) Find the recoil speed of the rifle. m/s (b) If a 675-N man holds the rifle firmly against his shoulder, find the recoil speed of the man...
Revi Part A An object of volume 7.50 x 10-4 m and density 1.15 x 103 kg/m3 is completely submerged in a fluid. Calculate the weight of this object Express your answer with the appropriate units. ? HA Value Units Request Answer Submit Part B Calculate the buoyant force on this object if the fluid is air (density 1.20 kg/m3) Express your answer with the appropriate units. ? Value Units Bair = Request Answer Submit P Pearson Part C Calculate...
An object has a kinetic energy of 284 J and a momentum of magnitude 23.5 kg · m/s. (a) Find the speed of the object. m/s (b) Find the mass of the object. kg
An object has a kinetic energy of 254 J and a momentum of magnitude 23.7 kg·m/s. Find the speed and the mass of the object. speed m/s mass kg
a. Two forces are acting at a single point on an object. Force A has a magnitude of 8000 N and is directed due West. Force B has a magnitude of 6000 N and is directed at 400 N of E. Determine the magnitude of Force C which must act at the same point so that the object will be in translational equilibrium. b. 40° 5.0 m A 25 kg mass is suspended from the end of a 5.0 m...
(1) A moving object has a kinetic energy of 119 J and a momentum with magnitude of 28.0 kg·m/s. (a) Determine the mass of the object. ______ kg (b) Determine the speed of the object. ______m/s (2) A 5.1 g dart is fired into a block of wood with a mass of 24.2 g. The wood block is initially at rest on a 1.6 m tall post. After the collision, the wood block and dart land 3.4 m from the...