Homework Answers
Add Answer to:
86. Calculate the Reynolds numbers for the flow of water through (a) a nozzle with a...
85. Show that the Reynolds number is unitless by substituting units for all the quantities in...
85. Show that the Reynolds number is unitless by substituting units for all the quantities in its definition and cancelling. 86. Calculate the Reynolds numbers for the flow of water through (a) a nozzle with a radius of 0.250 cm and (b) a garden hose with a radius of 0.900 cm, when the nozzle is attached to the hose. The flow rate through hose and nozzle is 0.500 L/s. Can the flow in either possibly be laminar?
62. (a) Calculate the retarding force due to the viscosity of the air layer between a...
62. (a) Calculate the retarding force due to the viscosity of the air layer between a cart and a level air track given the following information-air temperature is 20° C, the cart is moving at 0.400 m/s, its surface area is 2.50 x 10-2m², and the thickness of the air layer is 6.00 x 10-5m. (b) What is the ratio of this force to the weight of the 0.300-kg cart? 63. What force is needed to pull one microscope slide...
A nozzle with a radius of 0.450 cm is attached to a garden hose with a...
A nozzle with a radius of 0.450 cm is attached to a garden hose with a radius of 0.890 cm. The flow rate through the hose is 0.580 L/s. (Use 1.005 X 10-3 (N/m?) ·s for the viscosity of water.) (a) Calculate the Reynolds number for flow in the hose. (b) Calculate the Reynolds number for flow in the nozzle. (c) This flow is classified as which of the following? o laminar O turbulent O unstable
Calculate the retarding force due to the viscosity of the air layer between a cart and...
Calculate the retarding force due to the viscosity of the air layer between a cart and a level air track given the following information—air temperature is 20º C , the cart is moving at 0.400 m/s, its surface area is 2.50×10−2 m 2 , and the thickness of the air layer is 6.00×10−5 m . A) 0.00302 N B) 0.00156 N C) 0.0103 N D) 0.00604 N
Calculate the Reynolds number, Re- (2rpv)/ n, for the following situations and decide whether the flow...
Calculate the Reynolds number, Re- (2rpv)/ n, for the following situations and decide whether the flow of fluid around them is laminar or turbulent. Then calculate the frag force using the appropriate formula. For the radius, use r 2(Area/perimeter) which, for a circle, gives the radius. Densities and viscosities are in the table on page 2. Also, to keep things uniform, we will use the boundaries for laminar and turbulent flow from Engineer's Toolbox, also on pg. 2 [1] A...
A 300 W immersion heater is used to heat 400 g of water from 10 ⁰C...
A 300 W immersion heater is used to heat 400 g of water from 10 ⁰C to 80 ⁰C. About how many minutes did this take? 5 min 3.5 min 2 min None of the above is correct As blood passes through the capillary bed in an organ, the capillaries join to form venules (small veins). If the blood speed increases by a factor of 4.00 and the total cross-sectional area of the venules is 9.5 cm2, what is the...
Calculate the Reynolds number, Re = (2rρv)/ η , for the following situations and decide whether...
Calculate the Reynolds number, Re = (2rρv)/ η , for the following situations and decide whether the flow of fluid around them is laminar or turbulent. Then calculate the frag force using the appropriate formula. For the radius, use r = 2(Area/perimeter) which, for a circle, gives the radius. Densities and viscosities are in the table on page 2. Also, to keep things uniform, we will use the boundaries for laminar and turbulent flow from Engineer's Toolbox, also on pg....
24.54 The pressure gradient for laminar flow through a constant radius tube is given by where p-p...
24.54 The pressure gradient for laminar flow through a constant radius tube is given by where p-pressure (Nm, x (m's), and r= radius (m). distance along the tube's centerline (m), μ dynamic viscosity (N·sm2), Q-flow a. Determine the pressure drop for a 10-cm length tube for a viscous liquid (u 0.005 N s/m2, density - 1x 103 kgm)with a flow of 10x 10-5 m3/s and the following varying radii along its length, x, cm 2 r, mm 2 1.35 1.34...
Water flow in a pipe and then exit through a bended nozzle as shown in Figure...
Water flow in a pipe and then exit through a bended nozzle as shown in Figure 3. The nozzle is connected to the main pipe using a flanged joint at (1). The diameter of the pipe is D1 10 cm and is constant, whilst the diameter at the outlet section of the nozzle (2) is D2 3 em. The flowrate of the water is Q = 15 liter/s and the water pressure at the flange is Pi 230 kPa. By...
density (kg/m) viscosity (cp mPa s) VISCOsI water 20°C air 20°C 1000 1.204 1090 1.03 02217...
density (kg/m) viscosity (cp mPa s) VISCOsI water 20°C air 20°C 1000 1.204 1090 1.03 02217 250,000 eanut butter Paper Homework 3 Viscosity and Flow. Learning Objectives: 1. Gain a feel for the Reynolds number for typical situations. 2. Determine type of flow from the Reynolds number. Calculate the Reynolds number, Re - (2rpv)/ n, for the following situations and decide whether the flow of fluid around them is laminar or turbulent. Then calculate the frag force using the appropriate...
85. Show that the Reynolds number is unitless by substituting units for all the quantities in its definition and cancelling. 86. Calculate the Reynolds numbers for the flow of water through (a) a nozzle with a radius of 0.250 cm and (b) a garden hose with a radius of 0.900 cm, when the nozzle is attached to the hose. The flow rate through hose and nozzle is 0.500 L/s. Can the flow in either possibly be laminar?
62. (a) Calculate the retarding force due to the viscosity of the air layer between a cart and a level air track given the following information-air temperature is 20° C, the cart is moving at 0.400 m/s, its surface area is 2.50 x 10-2m², and the thickness of the air layer is 6.00 x 10-5m. (b) What is the ratio of this force to the weight of the 0.300-kg cart? 63. What force is needed to pull one microscope slide...
A nozzle with a radius of 0.450 cm is attached to a garden hose with a radius of 0.890 cm. The flow rate through the hose is 0.580 L/s. (Use 1.005 X 10-3 (N/m?) ·s for the viscosity of water.) (a) Calculate the Reynolds number for flow in the hose. (b) Calculate the Reynolds number for flow in the nozzle. (c) This flow is classified as which of the following? o laminar O turbulent O unstable
Calculate the Reynolds number, Re- (2rpv)/ n, for the following situations and decide whether the flow of fluid around them is laminar or turbulent. Then calculate the frag force using the appropriate formula. For the radius, use r 2(Area/perimeter) which, for a circle, gives the radius. Densities and viscosities are in the table on page 2. Also, to keep things uniform, we will use the boundaries for laminar and turbulent flow from Engineer's Toolbox, also on pg. 2 [1] A...
24.54 The pressure gradient for laminar flow through a constant radius tube is given by where p-pressure (Nm, x (m's), and r= radius (m). distance along the tube's centerline (m), μ dynamic viscosity (N·sm2), Q-flow a. Determine the pressure drop for a 10-cm length tube for a viscous liquid (u 0.005 N s/m2, density - 1x 103 kgm)with a flow of 10x 10-5 m3/s and the following varying radii along its length, x, cm 2 r, mm 2 1.35 1.34...
Water flow in a pipe and then exit through a bended nozzle as shown in Figure 3. The nozzle is connected to the main pipe using a flanged joint at (1). The diameter of the pipe is D1 10 cm and is constant, whilst the diameter at the outlet section of the nozzle (2) is D2 3 em. The flowrate of the water is Q = 15 liter/s and the water pressure at the flange is Pi 230 kPa. By...
density (kg/m) viscosity (cp mPa s) VISCOsI water 20°C air 20°C 1000 1.204 1090 1.03 02217 250,000 eanut butter Paper Homework 3 Viscosity and Flow. Learning Objectives: 1. Gain a feel for the Reynolds number for typical situations. 2. Determine type of flow from the Reynolds number. Calculate the Reynolds number, Re - (2rpv)/ n, for the following situations and decide whether the flow of fluid around them is laminar or turbulent. Then calculate the frag force using the appropriate...
Most questions answered within 3 hours.
-
Engineers must consider the breadths of male heads when
designing helmets. The company researchers have determined...
asked 17 minutes ago -
In the Williamson Ether Synthesis of Phenacetin from
Acetaminophen, sodium methoxide in methanol and 100% ethanol...
asked 21 minutes ago -
If the spin of the earth suddenly changed to spin in the
opposite direction, what effect...
asked 35 minutes ago -
An orb weaver spider with a mass of 0.23 grams hangs vertically
by one of its...
asked 31 minutes ago -
Determine the sample size required to estimate the mean score on
a standardized test within
2...
asked 54 minutes ago -
The idea that one can remain relatively 'anonymous' on the
internet if they so choose, for...
asked 40 minutes ago -
In the reaction of N2 and H2 to produce
NH3, how many moles of H2 will...
asked 42 minutes ago -
When a certain coin is flipped, the probability of
obtaining a tails is 0.55. Which of...
asked 39 minutes ago -
Can you show how a sulfonic acid group
is introduced into an aromatic ring by Friedal...
asked 45 minutes ago -
Implement the Smith-Waterman algorithm in C that accepts a
substitution matrix.
You may assume the substitution...
asked 45 minutes ago -
The equilibrium constant Kp for the reaction
C(s)+H2O(g)⇌CO(g)+H2(g) is 2.44 at 1000 K. What are the...
asked 56 minutes ago -
HACKING
1: Discuss the tricks of hacking in 300 words.
2: Explain in you own words...
asked 57 minutes ago