In the diagram below there is a thick-walled cylindrical tube. Its height is H 5.0 m, its inner radius is R1 = 1.0 m, its outer radius is R2= 3.0 m and its mass is M = 10.0 kg. The volume density is proportional to the square of the height h measured from the top of the cylinder: p « h?.
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Q: Gold, which has a density of 19.32 g/cm³, is the most ductile metal and can be pressed into a thin…
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Q: Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin…
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- What is the approximate mass of air in a living room 4.3 m x 3.4 m x 2.8 m? The density of air is 1.29 kg/m³. Express your answer to two significant figures and include the appropriate units. HẢ ? Value Units тPlease help. This problem involves finding the radius and volume of a platinum atom using its density. Thank you.The density of platinum is 21500 kg/m3 and that of aluminum is 2702 kg/m3. Find the ratio of the volume of 1.20 kg of platinum to the volume of 1.01 kg of aluminum.
- the average density of an atom is approximately 103 kg/m3. The nucleus of an atom has a radius about 10-5 times that of the entire atom, and contains nearly all the mass of the atom. What is the approximate density, in kilograms per cubic meter, of a nucleus?Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. (a) If a sample of gold with a mass of 4.041 g, is pressed into a leaf of 1.423 μm thickness, what is the area of the leaf? (b) If, instead, the gold is drawn out into a cylindrical fiber of radius 2.900 μm, what is the length of the fiber?Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. (a) If a sample of gold with a mass of 3.663 g, is pressed into a leaf of 2.187 um thickness, what is the area of the leaf? (b) If, instead, the gold is drawn out into a cylindrical fiber of radius 2.200 um, what is the length of the fiber? (a) Number i 1.429 Units m^2 (b) Number 72.56 Units
- Consider a water tank that is being filled with rainfall at the top and is drained through a small hole atthe bottom. The change in volume can be modelled by considering the amount of water entering andleaving the tank (per unit of time) as followsdVdt= fin − fout.Here volume of water in the tank V is in litres, flow rate in fin is in litres per hour, flow rate out fout isin litres per hour and time t is in hours. Initially, the tank contains 50L of water: V (0) = 50.(a) Assume the rainfall throughout the day is getting heavier, such that, fin(t) = 10 + t andthat the tank is losing 10% of its volume of water per hour, such that, fout(V ) = 0.1V . Check bydirect substitution that the functionV (t) = 10(t + 5e−0.1t)satisfies the ODE and the initial condition.Now assume that the hole is slowly growing in size, so that the flow rate out increaseswith time:fout(V, t) = 0.1(1 + 0.1t)V.Solve the ordinary differential equation for V (t) with this flow rate out, using either separation…Gold, which has a density of 19.32 g/cm³, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. (a) If a sample of gold, with a mass of 49.73 g, is pressed into a leaf of 4.500 µm thickness, what is the area of the leaf? m2 (b) If, instead, the gold is drawn out into a cylindrical fiber of radius 1.500 µm, what is the length of the fiber? kmWhat mass of fresh water (in kg) can be contained in a box whose dimensions are 270 mm by 257 mm by 468 mm? (Density of fresh water = 1000 kg/m^3)