Oil Definition and 576 Threads

Homework Statement Calculate the number of moles of CO2 that are emitted into the atmosphere per year due to the total energy consumption on Earth (16TW). Note: 1kg oil yields 42MJ and for oil C:H ' 1:2. I don't know how to calculate how many grams/moles of CO2 are emitted by burning 1kg of...

[Mentor note: This thread was moved from General Physics due to it being homework related] A friend and I were reviewing problems from a GRE subject which read: "A layer of oil with density 800 kg/m^3 floats on top of a volume of water with density 1000 kg/m^3. A block floats at the oil-water...

What may be the boiling point (temperature) of a refrigeration POE oil at, let's say, 500 microns absolute pressure ?

I am writing out the lab for the Milikan Oil Drop experiment and punching out the numbers has shown that my measured charge is off by a factor of 5 from the theoretical amount. theoretical: 1.6e-19 experimental: 3.16e-14 See if I divide this number by 2e5 (which means I am saying there are...

I've got mg=kvf, when the e-field is zero, (taking downwards direction as positive), k is some constant and vf is the terminal velocity of an oil drop. Then when the e-field is on, mg+kve=Eq, where Eq is the force from the electric field, and k is the same constant and ve is the drift velocity...

Im having an issue with a manual pump opening an actuator. It opens fine and holds pressure until the temperature starts to drop. My question is does anyone know of any hydraulic oil that is not susceptible to condensing when temperature drops?

Hey Folk! I need your help! I am going to study abroad for my master degree, but I cannot find relevant university for my qualification. My qualification is Oil Mechanics (Mechanican engineering of OIL and gas, Oil machinery) and I want to study my master in the European countries, particulary...

Homework Statement in a millikan type apparatus, the horizontal plates are 2 cm apart. with the field switched off, an oil drop is observed to fall with a steady velocity of 2 x 10^-4 m/s. when the field is on, the upper plate being positive and the drop just remains stationary when the pd...

Homework Statement The piston shown weighs 11 lbf. In its initial position, the piston is restrained from moving to the bottom of the cylinder by means of the metal stop. Assuming there is neither friction nor leakage between piston and cylinder, what volume of oil (S = 0.85) would have to...

Homework Statement A fluid which is flowing at 3600 m3/hr, at a pressure of 2.3MPa and a temperature of 75°C is to be separated using a vertical separator vessel. The composition of the fluid is 50% water and 50% oil. 1. Assume perfect separation and a residence time of 20 seconds in the...

Homework Statement When an oil drop falls freely, the velocity first increases, but afterwards it quickly reaches a constant speed, since the air resistance becomes equal to the weight of the oil drop. The air resistance is given by: Fair=6\pir\etav, where \eta is the viscosity of air...

An oil spill has fouled 200 miles of shoreline. The oil company responsible has been given 14 days to clean up the shoreline, after which a fine of $$10/day$ will be imposed. The local clean up crew can scrub 5 miles of beach per week at a cost of $500/day. Additional crews can be brought in at...

In the Millikan oil drop experiment, was the oil particles positively or negatively charged. and what were the charges of the plates. My textbook and what my gr.10 notes say is that the oil droplets and the bottom plate were positive, but every source online says that they were negative and that...

Hi, I'm having trouble with a conceptual problem: Homework Statement There is a block of wood in a jar with water; it is floating. If I pour oil into the container, obviously the oil sits at a layer above the water. The wooden block touches the water, oil and air now. Did the volume of the...

1. A thin film of oil (no = 1.50) with varying thickness floats on water (nw = 1.33). When it is illuminated from above by white light, the reflected colors are as shown in the figure. In air, the wavelength of yellow light is 580 nm. a. Why are there no reflected colors at point A? b. What is...

There are a lot of really tacky oil filters on the market. Get a filter that costs at least $8. The $3.27 filter that my daughter in law got with her $19.95 Walmart oil changed failed in three days. I use the top of the line Purolator or Mobile 1 filters. There are other good brands, but...

Could someone please explain how crude oil could explode as shown in the recent crash in Canada. see: http://www.stuff.co.nz/world/americas/8943438/Insufficient-brakes-led-to-runaway-train

my dad adds olive oil when boiling water for pasta, he says it's so that the noodles don't stick, but doesn't all the oil remain on the top? so even if some of the olive oil were to rub on the noodles while pouring the noodles in, wouldn't it just float to the top again? so how does olive oil...

Well, the question is not weird, but the circumstances are. I am not a physicist, and I am not studying physics. I am a student at a university, and quite interested in physics, but I am intentionally keeping myself away from taking any more physics classes. I like to be able to imagine...

Lubricating oil in a motorcycle engine gets pressurised by a pump and goes to an oil gallery, from where it splits into two paths: one to the cylinder head and the other to the crankshaft, via the cover clutch. Oil to the cylinder head travels through the entire length of the oil gallery in...

Homework Statement A gas station stores its gasoline in a tank underground. The tank is a cylinder lying horizontally on its side. The radius is 3 ft, the length is 14 ft, and the top of the tank is 10 feet under the ground. The density of gasoline is 42 lb/ft3 a) Consider a slice of gasoline...

I have some walnut wood furniture (dining table, coffee table) that doesn't have a permanent finish. I've treated it in the past with boiled linseed oil that's dissolved in turpentine, but I'm looking for alternatives. I don't like the turpentine, would it be possible to use oil without the...

Homework Statement Hi, I had to calculate the charge of an oil drop using a lab simulation Homework Equations q = mgd/v The Attempt at a Solution This is the result i came up with: The charges are not multiple of 1.6x10^-19 C. How can i fix this? Thanks

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Homework Statement Homework Equations The Attempt at a Solution For the second part, I got an answer that is indpendent of the index of oil? That woud mean that the answer would be the same as putting it directly through water.. No clue about the third part. For the last part, Not sure...

Homework Statement The total amount of oil in a well is 24000 barrels. The present rate of consumption is 100 barrels per year. How long will the gas supply last if the present yearly rate of consumption increases by 1% per year? Homework Equations We can use the approximation (1+x)^i =...

I am 21 years old starting college at Florida State University. I want to major in engineering but don't know what field of engineering will lead to a career in oil refining. The university does not offer petroleum engineering. I would like to work on the management side so Industrial...

Homework Statement A spherical tank of radius 8 feet is half full of oil that weighs 50 pounds per cubic foot. Find the work required to pump oil out through a hole in the top of the tank. The Attempt at a Solution this is an example problem in my book and they start off by subdividing...

I have a Optical trap that collects Raman. With Glass cover-slips we use a 1.51 refractice index oil (DF cargille). The trap works but glass has high auto-fluorescence at our excitation wavelength(785 nm9), the weak Raman can't be detected. So we use synthetic fused silica cover-slips with a...

Hi, Why do oil and water not mix? We know that some liquids mix together while others not, I am looking for the reason of this. Thanks to any replies

Fellows I am new to this exciting forum. Mostly involved in applied physics, I need to know if it safe to distill dirty Santovac diffusion pump oil just in a common distiller, exposed to air. I am worried about eventual oil oxidation/cracking. Thanks! Roberto

Viscocity of glycerine is high than that of oil then why it can't be used in hydraulic brakes..?

Question: "An oil tanker has just entered port and is being cleaned using a high-pressure hose. The washing of the hull and deck continues until there is a large explosion. The fire marshal investigates and pronounces that the explosion was the result of cleaning the ship with water. Explain...

Like the title says. I"m guessing tens of thousands of years?

(Diagram attached) Why is crankcase oil supplied to sleeve bearings in the connecting rod?Does the oil film act like in a journal bearing? I was reading about compressors and there is a mechanism called a 'crosshead'(see diagram) that converts rotary to reciprocating motion. Its funny how...

Homework Statement A 1.50 x 10^-14 kg oil drop accelerates downward at a rate of 1.80 m/s^2 when placed between two horizontal plates that are 9.40 ch apart. The potential difference between the two plates is 980 V. Determine the magnitude of the charge on the oil drop. m = 1.50 x 10^-14 kg...

I've got a video here from CBN (Christian Broadcasting Network). Yes it's a horrible source and it appears fishy, but I am intrigued if there is any truth because in the video a professor from Oxford seems to support it's claims (at some level). Is there any evidence that taking coconut oil...

I have three different liquids l1, l2 and l3 stored for 10 days. The liquid are required to be kept in temp x1, x2 and x3. As input i have following: 1) daily temp of all three liquids 2) daily qty i need to keep temp of all three liquid constant - to do that heating is done. Due to...

I recently gave my hand tools a bath in " right from the bottle" strength HCL. I had previously known about the naughty flash rusting that occurs, so to combat the rust, I quickly plunged the tool in water, gave it a quick wipe and then plunged it into extremely hot cooking oil. The tools...

An open U shaped tube is initially partially filled with water (ρ=1000 kg/m^3). A 10 cm high column of oil (ρ=800 kg/m^3) is poured into the right side of the tube. What is the height of the oil above the water? I set the water and oil equal to each other. (800)(10)(9.8)=(1000)(H)(9.8)...

Homework Statement 1: Determine the wall shear stress that acts at the lower side of the plate. 2: Determine the force Fx that is needed to give the plate a speed of u = 1m/s. 3: Determine the speed V, that is leaves an air jet that blows against the plate and which creates the same force...

Hi guys, I'm pretty new here, and long story short, I'm struggling a bit on a fluid mechanics question I've been doing for some revision. A shaft 70 mm in diameter is being pushed at a speed of 400 mm/s through a bearing sleeve 70.2 mm in diameter and 250 mm long. The clearance, assumed...

Homework Statement A 1.02 kg beaker containing 1.98 kg of oil (density = 916.0 kg/m3) rests on a scale. A 1.98 kg block of iron is suspended from a spring scale and completely submerged in the oil. Determine the equilibrium readings of both scales. What does the top scale read...

Homework Statement I did the lab and have to analyze the data to determine the quantized charge of an electron. I have used the data to determine the 'total' charge on the observed drops using the following equation.Homework Equations q = 3 ∏ r (E) η (Vup+Vdown) Where r is the known radius of...

Homework Statement Fromm Griffiths Two long coaxial cylindrical metal tubes (inner radius a, outer radius b) stand vertically in a tank of dielectric oil (susceptibility \chi_{epsilon}, mass density \rho. The inner one is maintained at potential V, and the outer one is grounded. To what...

It has been discussed before that Greece is a financial liability for the EU and that it was puzzling that most European leaders continued to believe in a happy end. But they probably knew this I wonder why this has taken so long and if the stock markets will soar next week.

Millikan Oil Drop Experiment -- A few questions Homework Statement I'm currently doing the millikan oil drop lab; we're using a PASCO Scientific Model 300a (fairly ancient). Specifically, my partner and I are having major problems making any of the droplets in the viewing chamber go back up...

I know a guy that is really big into hot rods. He's got a late 80's model firebird with a custom engine in it. Dudes got probably got between $15-20k in the engine alone. It puts out somewhere just over 1000 hp, and he's done all the work on his own, so I feel inclined to believe the guy. But I...

Hello everyone, My first post was deleted by admin. Anyways, the question is back for those who have not read it. I am installing a turbo system onto a motorcycle with an oil pressure range far too low for the turbo. I have develloped a restricter that has boosted the pressures to where they...

Homework Statement Explain why water and oil doesn't mix at room temperature using the entropy and free energy that you found to explain. Homework Equations The entropy that I found is -(Kb)ln(2) and the free energy is (Kb)(T)ln(2). The Attempt at a Solution Can someone direct me...