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- Explain this formulaa)What is the area of a solar collector that could collect 110 MJ of energy in 1 hr? This is roughly the energy content of 1 gallon of gasoline. Express your answer with the appropriate units.An electric elevator with a hoist at the top has a steel cable which weigh 3kg/m. The total height of the elevator is 30 m from the basement to the top floor. Assuming that the cable is completely wound on to the motor when the elevator is in the top floor position, determine the total work done in lifting 500 kg load from the basement to the top floor 15.
- What is the power in kW produced by the La Rance tidal power station in France if the usable tidal range is 10 m? The barrage is 140m long and the area of the basin behind the barrage is 22 km2. Tidal period is 12h 25minutes. Density of salt water is 1020 kg/m3. Use proper units and 3 significant figures.Suppose you have an ice cream cone full of melted ice cream. The ice cream cone is in the shape of a right circular cone and is 0.5 feet tall with a width (diameter) of 0.25 feet at the top. You decide to drink the melted ice cream using a straw positioned at the top of the cone. How much work is necessary to drink all of the ice cream through the straw? Note that the approximate weight-density of melted ice cream is 64.05 pounds per cubic foot. Round your final answer to 3 decimal places.I don't know how to work this problem. For part A, it gives the solutions to be Vf=-7.1m/s in the x-direction + 23.5m/s in the y-direction. For part B it gives the answer to be K=-1.15*10^7 J, which calculates to 11.5 MJ of energy lost.
- A cylindrical tank, shown in the figure, has height 8 m and radius 4 m. Suppose the water tank is half-full of water. Determine the work required to empty the tank by pumping the water to a level 6 m above the top of the tank. Use 1000 kg/m³ for the density of water and 9.8 m/s² for the acceleration due to gravity. 4 m Draw a y-axis in the vertical direction (parallel to gravity) and choose the center of the bottom of the tank as the origin. For 0 ≤ y ≤8, find the cross-sectional area A(y). A(y) = (Type an exact answer, using as needed.) 8 mA block slides across the ground and comes to rest in 12.0 m. muk = 0.200. Find the initial speed using conservation of E. Correct answer: 6.86 m/sA 150 gg particle at x= 0 is moving at 8.00 m/s in the +xdirection. As it moves, it experiences a force given by Fx=(0.950N)sin(x/2.00m).What is the particle's speed when it reaches x = 3.14 m?