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- A rock with mass 254 grams is found to displace 199 cubic centimeters of water when fully immersed. What is its (the rock's) density in kilograms per cubic meter? Don't put the unit; just the number.(a) Assuming that each cubic centimeter of water has a mass of exactly 1 g, find the mass of 9.38 cubic meter of water. (b) Suppose that it takes 13.9 hours to drain a container of 91.3 m³ of water. What is the "mass flow rate," of water from the container?Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might be 2.00 x 1o28 kg and 1.80 x 103 m. (a) Find the density of such a star. 81869826600000, kg/m3 (b) If a dime (V = 2.0 x 10-7m³) were made from this material, how much would it weigh (in pounds)? 1.64 X Ib
- (a) What is the volume (in km3) of Avogadro’s number of sand grains if each grain is a cube and has sides that are 1.0 mm long? (b) How many kilometers of beaches in length would this cover if the beach averages 100 m in width and 10.0 m in depth? Neglect air spaces between grains.Assuming that each cubic centimeter of water has a mass of exactly 1 g, find the mass of 8.70 cubic meter of water. (b) Suppose that it takes 15.0 hours to drain a container of 39.4 m3 of water. What is the "mass flow rate," of water from the container?(a) Assuming that each cubic centimeter of water has a mass of exactly 1 g, find the mass of 8.88 cubic meter of water. (b) Suppose that it takes 15.5 hours to drain a container of 87.0 m3 of water. What is the "mass flow rate," of water from the container?
- DEA agents watch drug smugglers load cocaine onto a fishing boat in a Mexican river to transport it down the river to the ocean, and then to Miami. To estimate how much cocaine was loaded, they measure how much further the boat sinks into the water after being loaded. If the boat’s area at the waterline is 50 m2 and it sinks by 2 cm, how much cocaine was loaded?DEA agents watch drug smugglers load cocaine onto a fishing boat in a Mexican river to transport it down the river to the ocean, and then to Miami. To estimate how much cocaine was loaded, they measure how much further the boat sinks into the water after being loaded. If the boat’s area at the waterline is 50 m2 and it sinks by 2 cm, how much cocaine was loaded?The Ekman number, Ek, arises in geophysical fluid dynamics. It is dimensionless parameter combining seawater density ρ, a characteristic length L, Seawater viscosity μ, and the Coriolis frequency Ωsinφ, where Ω is the rotation rate of the earth and φ is the latitude angle. Determine the correct form of Ek if the viscosity is in the numerator.
- 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.i keep getting the unit conversion chain incorrect but i swear i’m song it correct i don’t understanddd:(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?