A weather report indicates the barometric pressure is 29.75 in of mercury. What is the atmospheric pressure in psi? Select the correct response: 1.0743 psi 3969.1260 psi 14.6106 psi 91.8475 psi A quart of SAE30 oil at 68 deg Fahrenheit weighs about 1.85 lb. Calculate the oil's mass density Select the correct response(s): 1.72 slugs/ft^3 2.71 slugs/ft^3 1.27 slugs/ft^3 217 slugs/ft-3

A weather report indicates the barometric pressure is 29.75 in of mercury. What is the atmospheric pressure in psi? Select the correct response: 1.0743 psi 3969.1260 psi 14.6106 psi 91.8475 psi A quart of SAE30 oil at 68 deg Fahrenheit weighs about 1.85 lb. Calculate the oil's mass density Select the correct response(s): 1.72 slugs/ft^3 2.71 slugs/ft^3 1.27 slugs/ft^3 217 slugs/ft-3

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.5P: Evaluate the dimensionless groups hcD/k,UD/, and cp/k for water, n-butyl alcohol, mercury, hydrogen,...

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In medical work, pressures are often measured in units of mm of H2O because body fluids, including the cerebrospinal fluid, typically have nearly the same density as water. The pressure of the cerebrospinal fluid can be measured by means of a spinal tap. A hollow tube is inserted into the spinal column, and the height to which the fluid rises is observed. If the fluid rises to a height of 160 mm, we write its gauge pressure as 160 mm H2O. (a) Express this pressure in pascals, in atmospheres, and in millimeters of mercury.
In medical work, pressures are often measured in units of mm of H2O because body fluids, including the cerebrospinal fluid, typically have nearly the same density as water. The pressure of the cerebrospinal fluid can be measured by means of a spinal tap. A hollow tube is inserted into the spinal column, and the height to which the fluid rises is observed. If the fluid rises to a height of 160 mm, we write its gauge pressure as 160 mm H2O. a) Sometimes it is necessary to determine whether an accident victim has suffered a crushed vertebra that is blocking the flow of cerebrospinal fluid in the spinal column. In other cases, a physician may suspect that a tumor or other growth is locking the spinal column and inhibiting the flow of cerebrospinal fluid. Such conditions can be investigated by means of the Queckensted test. In this procedure the veins in the patient’s neck are compressed, to make the blood pressure rise in the brain. The increase in pressure in the blood vessels is…
The liquid column height of a barometer is h = 733.74 mm, and the specific weight of the liquid is γ = 13.30 kN/m3. Calculate the atmospheric pressure, Patm____kPa
An air compressor intakes atmospheric air at 14.7 psi, and increases its pressure to 150 psi (gauge). The pressurized air is stored in a horizontal tank. What is the absolute pressure of air inside the tank? Express your answers in terms of psi, kPa, bars, and standard atm. Recall that 1 atm = 14.7 psi = 101,325 kPa. Show your calculations and results.
pressurea are sometimes determined by measuring the height of a column of liquid in a vertical tube, what diameter clean glass tubing is required so that the rise of the water at 20°C in a tube due to capillary action (as opposed to pressure in tube) is less than h=1.0mm
Q1 Determine the minimum size of glass tubing that can be used to measure water level, if the capillary rise in the tube is not to exceed 0.3 mm. Take surface tension of water in contact with air as 0.0735 N/m. A U-tube is made up of two capillaries of bores 1.2 m and 2.4 mm respectively. Q2) The tube is held vertical and partially filled liquid of surface tension 0.06 N/m and zero contact angle. If the estimated difference in the level of two menisci is 15 mm, determine the density the liquid. Q10) In measuring the unit energy of a mineral oil (specific gravity = 0.85) by the bubble method, a tube having an internal diameter of 1.5 mm is immersed to depth of 12.5 mm in oil. Air is forced through the tube forming a bubble at the lower end. What magnitude of the unit surface energy will be indicated by a maximum bubble pressure intensity of 150 N/m.
C1 (a). A lubricating oil having the dynamic viscosity of 0.055 poise and kinematic viscosity of 0.17 stokes. Calculate (i) the density of oil in kg/m3, (ii) the weight density of oil in N/m3,(iii) the specific gravity, and (iv) the specific volume in m3/kg. C1 (b). Calculate the capillary effect in mm in a glass tube of 4.4 mm diameter, when immersed in (1) water (2) mercury. The values of surface tension in contact with air are 0.0737 N/m and 0.54 N/m respectively. The contact angle for water =00 and mercury =1300. (Enter only the values by referring to the unit given. Also, upload the handwritten answers in the link provided) C1(a).(i).The density of oil in kg/m3 C1(a). (ii) the weight density of oil in N/m3 C1(a). (iii) the specific gravity C1(a). (iv) the specific volume in m3/kg C1 (b). 1.The capillary effect (water) in mm C1 (b). 2.The capillary effect (mercury) in mm
A soccer referee inflates a soccer ball to the standard required measured pressure for a game of 90kPa, before the game. The balloon has an internal volume of 2650 cm3 and the air is at a temperature of 25°C when the balloon is first inflated. The ball is brought onto the field of play, and by the time the game starts, the air temperature has dropped to 0°C. Assuming that the volume of the balloon does not change significantly. Determine the following: a. Make a schematic of the system, showing the limits and conditionsb. The mass (in Kilograms) of air in the ball.c. The air pressure in the ball when the game starts. (Measured pressure)
A given model of smartwatch worn by a diver is rated for 5 atm. If the diver swam downwards in a brackish lake with water density of 63 lbm/ft3, how deep [ft] will he reach before water starts entering the watch above the rated pressure specification? Assume that atmospheric pressure is equal to 14.5 psi.
Problem: The reading of an automobile fuel gage is proportional to the gage pressure at the bottom of the tank. If the tank is 32 cm deep and is contaminated with 3 cm of water. 1. If the tank is full of gasoline what should be the reading at the gage in Pa? Use γwater = 9790 N/m^3, γgasoline = 6670 N/m^3 and γair = 11.8 N/m^3 2. How many centimeters of air remains at the top when the gauge indicates “full”? 3. If the tank is 0.5 m^2 in area, calculate the volume of gasoline when the gage reads “full”.
Calculate the pressure of an oil of sp.gr. 0.8, and a mercury of sp.gr. 13.6 in N/cm3. Take density of water, ρ = 1,000 kg/cu.m
3. A barrel contains a 15 cm layer of oil of density 5.88 kN/m3 floating on water that is 30 cm deep. What is the gauge pressure in mmHg at the oil-water interface?