(a) Let s(t) be the amount of salt in the tank at time t. Find a differential equation governing s(t).
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- In 1923, the United States Army (there was no United States Air Force at that time) set a record for in-flight refueling of airplanes. Using two refueling planes, an Airco DH-4B biplane was able to remain in flight for 39 h. During the flight, the refueling planes were able to air-transfer a total of 687 gallons of fuel to the plane in 9 refueling transfers. Assume that the refueling nozzle had a diameter of 1.45 in and each refueling took 2.45 min to perform. Calculate the velocity of the fuel through the nozzle. Assume that the fuel filled the entire cross-sectional area of the nozzle. velocity: m/s(D) The density of alumınum is 2.70 alam. Recal that density is mass divided bu uolume.lwhat is the mass of a cube m that is B.104cm on a Side in SI units. ot aluminur Express your answerAn oil circulates through a pipe (SG = 0.85), if the speed of the oil is 20 m / s and the diameter of the pipe is 10 cm, determine the mass flow of the oil (in Kg / s) in the pipe.
- Please help. This problem involves finding the radius and volume of a platinum atom using its density. Thank you.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.
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