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- 2. Using the radial velocity technique, you observe an extrasolar planet about a1.2 M⊙ star. The peak velocity in the radial velocity curve is 20 m/s, and the period observedfrom the velocity curve is 25 days. What is the minimum mass of the planet (expressed interms of Jupiter masses)? (Be sure to include how the inclination factors in)The known mean velocity is 15.6 mph at a site at a height of 31 ft (about 10m). Approximate the wind velocity at a height of 100ft (about 30 m) at site located in the suburban (use p =0.30). a.217.56 mph b.22.17 mph c.None of these d.21.76 mph e.21.96 mphAs a young engineer, you have been tasked to select the location of a wind turbine based on the details of the location and relevant specification below:Air densityAverage air velocityDiameter of wind turbine bladesLOCATION A1.29 kg/m3 54 km/h 70 mLOCATION B1.21 kg/m3 63 km/h 60 m By comparing the amount of power generated (in MW) at Location A and Location B, determine the location that will give the optimum wind power generation.9 kg of Refrigerant 134-a is initially at 26.69°C with enthalpy of 100 kJ/kg. Heat is transferred to the refrigerant under a constant-pressure process until the entropy of the refrigerant reaches 0.9795 kJ/kg.K.(i) Determine the final temperature of the refrigerant(ii) Calculate the boundary work, Wb, in kJ.Assist your answer with a proper P-v diagram indicating the properties,process, and boundary work region clearly.(iii) Explain the reason behind the high amount of boundary work obtained in (ii).Assist your explanation with relevant sketching.
- a) Estimate the drag force on the plate. You may use the expression ?? = ∫ τ?dA b) When the flow becomes turbulent, we can approximate the velocity gradient at the wall as constant, ∂? ∂? = ?. If the total drag force is 300 N, find ?. c) When the fluid is heated to 90oC, the density drops slightly and the viscosity decreases a lot, and engineers observe that the equation, τ? = 0.0644??∞ 2 δ ? , becomes less accurate. Explain why this might occur (1-2 sentences).Pls answer asap I will give good ratings A jet of water flows from left to right and hits a splitter block, as shown in the figure. Some of the jet is diverted upwards and some of it downwards. The incoming jet has a velocity U1=U1=1.6 m/s and a cross-sectional area A1A1. The jet that is deflected upwards has a velocity U2=U2= 0.7 m/s, a cross-sectional area A2=A2= 11 cm22 and is at an angle θ2=θ2= 35oo with respect to the horizontal. The jet that is deflected downwards has a velocity U3=U3= 0.9 m/s, a cross-sectional area A3=A3=14 cm22 and is at an angle θ3=θ3= 25oo with respect to the horizontal. The density of water is ρ=ρ=1000 kg/m33.see diagram attached and answer - A-Find the cross-sectional area of the incoming jet (in cm22) B- Find the horizontal force on the block (in Newtons) (Note: remember to convert the area of the jets from cm22 to m22!) c)The vertical force on the block is found to be FyFy. What velocity of the incoming jet (i.e. what value of u1u1) would be needed to…a) Estimate the drag force on the plate. You may use the expression ?? = ∫ τ?d? b) When the flow becomes turbulent, we can approximate the velocity gradient at the wall as constant, ∂? ∂? = ?. If the total drag force is 300 N, find ?. c) When the fluid is heated to 90oC, the density drops slightly and the viscosity decreases a lot, and engineers observe that the equation, τ? = 0.0644??∞ 2 δ ? , becomes less accurate. Explain why this might occur (1-2 sentences)
- A 50. 49mm diameter horizontal jet of water strikes a plate. .Determine the velocity of the jet if 80N of horizontal force is required to move the plate at 2.49m/s at the same direction as that of jet. Group of answer choices 1.18 1.81 8.18 8.81 Nextplease I need an answer for this A water jet is deflected 180 degree in a curved vane with diameter of 25.5mm and velocity of jet of 6.5m/s. Determine the force that the jet exerts on the stationary vane Group of answer choices 234 23.4 43.2 34.2A 50. 49mm diameter horizontal jet of water strikes a plate. Determine the velocity of the jet if 80N of horizontal force is required to move the plate at 2.49m/s at opposite direction as that of jet. Group of answer choices 8.83 3.38 3.83 8.33
- 13.73. A model of a motorboat is driven at 4.57 m/s by means of a jet of water 25 mm in diameter, ejected directly astern. The velocity of the jet relative to the model is 35.1 m/s. What is the driving force? Ans. 543 NConsider a commercial airliner flying at a speed of 540 mph (relative to the air) at analtitude of 30,000 feet.(a) Use the 1976 US Standard Atmosphere to determine the temperature, pressure,and density of air at this altitude.(b) Over a wide range of temperature, the dynamic viscosity of air follows the Suther-land Law, where μ0 = 1.716 × 10−5 Pa s, T0 = 273 K, and Sμ = 111 K. Use this to determinethe air viscosity at 30,000 feet.A 50. 95mm diameter horizontal jet of water strikes a plate. .Determine the velocity of the jet if 50N of horizontal force is required to move the plate at 2.95m/s at the same direction as that of jet. Choices: 7.90 9.70 79.0 0.97 Note: please help me in this sample problem and please base your answer on the choices given thanks for the help