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- A 45 grams (0.045 kg) golf ball of diameter equal to 43 mm fell into a 2m deep lake. Neglect inertia at the moment of impact. Assume viscosity of 1.12x10-3 Ns/m2 , water density of 1,000 kg/m3 and Cd=0.5. Sphere volume equals 4π r³ /3. 1. How long will it take from the moment it hits the surface until it gets to the bottom? 2. If one estimates the Cd with Cd=24/Re formula, the settling velocity would be unrealistically large. Why?ᴛʜᴇ ꜱʜᴀꜰᴛ ᴡʜᴏꜱᴇ ᴛᴏʀQᴜᴇ ᴠᴀʀɪᴇꜱ ꜰʀᴏᴍ 2000 ᴛᴏ 6000 ɪɴ-ʟʙ ʜᴀꜱ 1 1/2 ɪɴᴄʜ ɪɴ ᴅɪᴀᴍᴇᴛᴇʀ ᴀɴᴅ 60,000 ᴘꜱɪ ʏɪᴇʟᴅ ꜱᴛʀᴇɴɢᴛʜ. ᴄᴏᴍᴘᴜᴛᴇʀ ꜰᴏʀ ᴛʜᴇ ꜱʜᴀꜰᴛ ᴍᴇᴀɴ ᴀᴠᴇʀᴀɢᴇ ꜱᴛʀᴇꜱꜱ. ᴀ. 6036 ᴘꜱɪ ʙ. 6810 ᴘꜱɪ ᴄ. 5162 ᴘꜱɪ ᴅ. 5550 ᴘꜱɪA vertical jet thru a nozzle supports a 150.90N weight. The velocity and diameter of the jet are 17.90m/s and 3.90 cm respectively. Find the distance of load from the nozzle in meters. Group of answer choices 13.79 31.79 17.93 71.39I need an answer for this asap :(
- List the upper and lower limits for these dimensions. (See attached image)Questions Q11 - Q13 are true or false questions.Q11 - .500 = .505/.495 T of F .50 = .51/.49 T of F 2.000 = 2.005/1.995 T of FQ12 - 5.02 = 5.02/4.98 T of F 4.00 = 4.02/3.98 T of F .50 X = .51/.49 T of FQ13 - X 45° = 45.5°/44.5° T of FThe horizontal force due to water acting on the bolt (Fh): Fh=ρ×A1×V1×V1--V2 Fh=1000×π4×0.0752×1.254×1.254+11.286( Fh)=69.472 This is the only part I did not understand how to get. Can you please explain more? I arrived with this equation, -P1A1 - P2A2 (cancelled since atmos. Pres.) +Fh = rho A1v1 (v2-v1) Why did P1A1 disappear in your solution? How did you come up with (v1 - - v2) ? What is the control volume? Why did you not do a summation of forces is equal to change in momentum but instead go immediately to getting the horizontal force acting on the bolt?The same engineer decides to look into rates of cooling for liquids toexperiment with different cooling solutions for servers. She finds thatthe rate of cooling for one liquid can be modelled by the equation:y = 48 × 0.99t(0 ≤ t ≤ 80)where y is the temperature of the liquid in degrees Celsius and t is thetime in minutes.(i) State whether the type of reduction for this model is linear orexponential. Describe how reduction rate differs between linear andexponential functions. (ii) Calculate the temperature when t = 20. [3](iii) Write down the scale factor and use this to find the percentagedecrease in the temperature per minute. (iv) Use the method shown in Subsection 5.2 of Unit 13 to find the timeat which the temperature is 30◦(v) Determine the halving time of the temperature.
- explains how the two methods of parameter estimation, namely the method of parameter estimation and the method of moments and percentile matching, are used to fit distributions to data for actuarial calculations.What mathematical relationship exists between the wave speed and the density of the medium, using the POWER trendline equation from the graph? Make your response specific (i.e., describe the full mathematical proportionality between the two variables) Feel free to use the table. Table: Frequency (Hz) Density (kg/m) Tension (N) Speed (cm/s) Wavelength (cm) 0.85 0.1 4.0 632.5 744.12 0.85 0.7 4.0 239.0 281.18 0.85 1.3 4.0 175.4 206.35 0.85 1.9 4.0 145.1 170.70The variables do not vary with respect to time is called as ___________________ a. Dynamic characteristics b. Random Error c. Systematic Error d. Static characteristics
- يخرج الهواء من فوهة معزولة عند 27 درجة مئوية و 100 كيلو باسكال و 150 (م / ث). إذا كانت الكفاءة الحرارية للفوهة 90٪ ، ارسم مخطط Ts لهذه العملية وحدد درجة حرارة المدخل والضغط (7، & P)؟ خذ (Cp = 1.005 و k = 1.4).Using Newton’s laws, we could show that for some pendulums, the period T is related to the length l and free-fall acceleration g by T=2pi square root of (l/g) , or T2 = (4pi2/g) * l Does one of your graphs support this relationship? Explain. (Hint: Can the term in parentheses be treated as a constant of proportionality?)I have been stuck on this problem for while thar area is 779.1 mm^2 sigma_x is 120.6497159 sigma_y is 0 and tau_xy is 0. Beta is 20 degrees