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A: given data: Lab = 12ft LBC = 36ft total = 48ft
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- An object initially at rest with a mass h8f 2, kg falls vertically downward from a height of 20 m from the ground. Determine Xte—kinetic energy and the final velocity of the object just before it hits the ground.A turbine is rotating at a constant speed of 2400rev/min. At what constant rate in radian/sec^2 must its motion be retarded to bring it to rest in 20 minutes?A cylindrical tank, 1 m in diameter and 5 m high is filled completely with two kinds of liquid of equal volume. The specific gravity of one liquid is 0.8 and that of the other is 1.2. If the liquid is going out through a 75-mm-diameter orifice (with C=0.61) located at the bottom of the tank, find the time elapsed for the liquid surface to drop by 3 m.
- Thirty (30) liters/second of stream water must be pumped up a vertical height of 12 meters to irrigate a farm. If head loss in casing and pump results in 62% pump efficiency and the electric motor used has 91% efficiency, what horsepower rating should the motor have and how many kilowatts will it use while pumping? GIVEN: q=30 l/s 0r 108 cu.m/hr h=12 m ME=91% PE=62% density of water =997 kg/cu.mAn open cylindrical tank 800mm in diameter and 2000mm high contains water to a depth of 1.6m. It is rotated about its vertical axis at 13 rad/s. How many liters of water are spilled? Use density of water as 1000kg/m3 and specific weight as 9.81kN/m3How much Megawatts can a motor generate if a 14 kN-m torque transmitted at 5.3 Hz is applied to the 10 mm diameter shaft attached to the motor?
- Car A is moving at a rate of 3 m/s when it collided with stationary Car B that has a mass of 1,500 kg. If the speed oh the two cars became 0.735 m/s, what amount of energy transformed to heat after the collision? Assume the cars moved as one after the collision. include figure and FBD.In a rectangular channel 12 m wide and 3.6 m deep water is flowing with a velocity of 1.2 m/s. The bed slope of the channel is 1 in 4000. If the flow of water through the channel is regulated in such a way that the energy line is having a slope of 0.00004 to find the rate of change of the depth of water in the channel.Imagine that the water level in Problem 8.34 rises at a rate of 0.1 cm/s. Knowing the diameter of the tank is 15 cm, what is the average velocity of the water leaving the tank?
- A rectangular channel having a width of 3 m. carries water flowing at a rate of 20 m3/s. If the depth of water in the channel is 1.2 m., compute the critical kinetic energy in meter. a. 1.290 b. 0.480 c. 0.825 d. 2.567Consider a a uniform spherical cloud (diameter 20 cm). The cloud consists of mono dispersed water droplets with diameter dp=100μm. In one sentence, define what terminal velocity is. Calculate the terminal velocity of a single spherical droplet and determine how long it takes for the droplet to reach the floor if travelling from a height of 2 m. You can assume Stokes flow. Data: Air density: 1.2 kg m-3 Air viscosity: 1.81x10-5Pa s Water density: 1000 kg m-3 Water viscosity: 0.001Pa s Gravity: 9.81 m s-2Water flows out of a hemispherical tank at the constant rate of 18 cu cm per min. If the radius of the tank is 8 cm, how fast (cm/min) is the water level falling when the water is 4cm deep?A. -0.1491 C. -0.1194B. -0.1941 D. -0.1149