Assuming that the specific gravity of the following substances is approximately the same, that is, 2.65, and that the water is at 20°C, calculate the time it will take to settle 1m of the following materials: a) Gravel (Dp=10,000 μm) in seconds I want help with this one, I did the problem but the time gave me 36.36 seconds and the Dr told me that the result is incorrect, I would like to know how to do it. I used the formula of V=Dp^2(g)(△p) / 18μ ; Then use a substitution to calculate the time which would be t=h/v

Problem 1: Reynold's number One can has your teeth cleaned professionally using a rotating brush or with a jet stream of a baking soda slurry. For baking soda slurries, the dentist uses a device similar to the device shown in HD Figure 8.24 to remove plaque. The fluid used in the device is a baking soda slurry. Baking soda slurry is 3.0% baking soda (sodium bicarbonate) in water, where 0.90% is the saturation limited of baking soda in water. If the inlet velocity is 0.24 m/s with inlet diameter of 5.4 mm at 23°C. The nozzle tip has a diameter of 0.51 mm. Assume no frictional effects. See page 4 for sodium bicarbonate-viscosity graph. State any other assumption needed. FIGURE 8.24 Inlet Flow Outlet Flow A. What is the Reynold's number for the fluid entering the device? B. Is the flow laminar or turbulent? C. For the same mass flow rate as in part A), determine the Reynold's number if the temperature is increased to 95°C. Hint: ratios can be used. State any assumption. Laminar or…

Please answer in 4 decimal places. Apply GIVEN, REQUIRED and SOLUTION.

Solve correctly please. Need stepwise ans. (Gpt/Ai wrong answer not allowed)