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The primary reason for the search is basic curiosity - the same curiosity about the natural world that drives all pure science. We want to know whether we are alone in the Universe. We want to know whether life evolves naturally if given the right conditions, or whether there is something very special about the Earth to have fostered the variety of life forms that we see around us on the planet. Source : http://www.ieltsg.co...g practice test .................................................... Would you kindly explain "life evolves naturally if given the right conditions, or whether there is something very special about the Earth to have fostered the variety…

Following the indications of Levi-strauss ,Lacan turns to linguistics to provide psychoanalytic theory with a conceptual rigour that it previously lacked.the reason for this lack of conceptual rigor was simply due, Lacan argues, to the fact that structural linguistic appeared too late for Freud to make use of it;"Geneva 1910" and "Petrograd 1920" suffice to explain why Freud lacked this particular tool' . 1. What does ' conceptual rigor ' mean? would you please give me a simple example? 2.Would you please tell me readily why "appeared too late for Freud to make use of it"?- or why it was too late for Freud? 3. In addition, what does "suffice to explain "mea…

Hello, I have some problems with the following pedigree: AR disease with population frequency of 1/62500. What is the prob. that IV-1 will be affected? Especially how to use the Hardy Weinberg Law in that case is my problem. According to my professor the solution should be 1/3 x 1/4 x 1/125. My problem is how to get the 1/125. According to my calculations it's 1/250. Thank you in advance for your help Inuvi

Have been working on these for days now, and keep coming to the same answers. The problem: A block of mass m rests on a plane inclined at an angle θ with the horizontal. A spring with force constant k is attached to the block. The coefficient of static friction between the block and plane is μs. The spring is pulled upward along the plane very slowly. (a) What is the extension of the spring the instant the block begins to move. (Use any variable or symbol stated above along with the following as necessary: g.) d=(-mgμscos(θ)-mgsin(θ))/k (b) The block stops moving just as the extension of the contracting spring reaches zero. Express μk (the coefficient of…

a stone is thrown upward an initial speed of 20m/s. it goes up to a certain height, then comes down to the same level from where it was thrown. assume ag= -9.8m/s^s a. how high does the stone go before it starts to come down? how long does it take the stone to reach this point? b. what is the acceleration of the stone at the highest point it reached? what is its speed at the highest point? c. how long does it take the stone to reach the same level from where it was thrown??

1. Sandy, a 16-year-old woman, returns to the emergency room for the fifth time. She has been treated for Bulimia repeatedly. On initial assessment, you note shallow breathing. ARTERIAL BLOOD GASES are as follows: pH = 7.45 PaCO2 =47 mmHg HCO3- = 33 mEq/Liter My answer is Complete Compensated Respiratory Acidosis but I'm a little iffy about it because bulimia can be prolonged vomiting which can cause metabolic alkalosis, while the shallow breathing can cause respiratory acidosis. 2. Mitch, age 36 is admitted to the ER for an acute onset of an asthma attack. The asthma attach has lasted at least one hour before blood gases are drawn. ARTERIAL BLOOD GASES are as follows: p…

This powder has a ph level of around 8, creates bubble when mixed in water and no reaction in vinegar. The form is a white roughy powder PLEASE HELP!!!

Question 1 Pressure vessel contains helium (10kg ) at 50 °C and 550 Kpa The Tank is agitated by a fan rated at 500 watts for 3 hours calculate the work done on the system by the fan over the three hours (5400KJ) the temperature rise in the tank (173°C) The final pressure of the system (844 KPa) Given the Cv of the helium is constant at 3.1156 kJ/kg/°C Question 2 A gas manometer tank 10 m3 of nitrogen pressure 60 psi 350 K is heated by a resistance heater at 12 amps and 240 volts for 150 seconds the gas expands to maintain a constant pressure in the system. Assume on heat losses calculate the final temperature of the gas (560K) The work done by…

1) A rigid walled tank 5m3 contains helium at 10 bar. The cylinder is heated from 10 °C to 50 ° C. What is the work done during the heating cycle. 2)An expanding gas storage vessel contains 5 m3 of methane at 1.1 bar. On a hot day the gas is heated from 20 °C to 35 °C. What work is done by the gas on its surroundings 3) One mole of CO2 is charged to a piston at 10 bar pressure 293K. The piston is allowed to expand to 4 times its volume isothermally. What work is done on the surroundings? The gas behaves ideally A more complicated example using a polyatomic gas Part1 CO2 is charged at 2 bar to a piston at 298 K volume 0.5 m3. It is known to vary as pol…

Ideal gas equation tutorial questions Q1) 5 moles of gas are heated in a container 10 litre in volume to a temperature of 600 ° F. What is the pressure of the gas? Q2) A balloon is filled with helium at 60F to a pressure of 1.1 Psi(g).The balloon will burst at 1.3 Psi(g) Assume the volume of the balloon does not change how much can the balloon be heated until it bursts? Q3) A car has a four cylinder 2 litre internal combustion engine running on iso-octane. Cylinder one is charged with a stoichiometric mixture of oxygen and iso-octane with the piston fully extended. The cylinder chamber is 10 cm long in this position. reaction 2C8H18 +25O2è 18H2O + 16CO2 …

Tutorial on multi flow systems Past exam question B3. Three process water streams meet at a junction mix and leave as a combined flow. Stream 1 is at 90 ˚C and flows at a rate of 1 kg/s. Stream 2 is at 50 ˚C and flows at a rate of 2kg/s. Stream 3 is at 30 ˚C . The total outlet flow is known to be 6 kg/s i) Determine the flowrate of stream 3 [4 marks] ii) Determine the final temperature of the outlet stream [8 marks] The junction is replaced with a heated tank 2 m in diameter and 2 m deep. The liquid level in the tank is observed to rise at a rate of 0.5m per hour. iii) Recalculate the flowrate of stream 3 into the tank [4 marks] …

Thermodynamics tutorials Carnot cycle q1 A domestic fridge uses refrigerant R 134 as the working fluid and operates on a standard idealised Carnot type cycle A) Draw the typical flow diagram for the refrigerator and sketch the temperature-entropy diagram for the process. B) Explain how the refrigerator works with reference to the diagrams produced for part 1 . C) State the Clausius version of the second law of thermodynamics and explain…

Rankine cycle exam questions Q1 A steam plant is designed on the basis of an idealised Rankine cycle where the plant raises steam at 3MPa and 350 °C. The steam is then expanded through a turbine and fed to a condenser that operates at a pressure of 12 kPa. i) Draw a flow diagram and sketch a temperature–entropy diagram for the process. You should ensure that you label the four key stages of the process on each diagram. ii) Determine the thermal efficiency of the process …

1) convert these temperatures to degrees Kelvin K 25 ○C, 85.6 ○F, 3000 ○R 2) convert these temperature to degree ○C 900○R, 758 ○K, 600 ○F, 3) convert these pressures to bar g 1500 Psig, 1800pa (g), 45M H2Og, 9 ATM (a), 5000 mmHg(a) 4) convert these gauge pressures to absolute pressures 9 bar, 2300Psi, 1500 mmHg 760Nm2

thermodynamics tutorial on flow devices Q1) Air at 150Kpa and 300K is compressed to 1.5 MPa At 400 K The air flows at 0.5 Kg/s and heat is lost from the compressor at a rate of 16KJ/kg during the process Determine the power input to the compressor Past exam questions Q2) Water at 15 ˚C is fed to the top of a spray column by a centrifugal pump from a bulk storage tank at a rate of 50 kg/min. The storage tank is 15 m in diameter 3 m deep and the level within the tank is maintained at 2 m by a float valve connected to the mains water supply. The pump draws water from the bottom of the bulk storage tank at ground level and discharges it though a nozzle mou…

Questions 4 Steam Quality Questions 20 m3 of Steam at 1 atm and 373.15K contains 1litre of water. What is the quality of the steam? 5 m3 of steam at 9.319 bar pressure and 450K contains 30litre of water what is the quality of the steam The steam quality at 1atm is 67% what is the specific volume of the mixture Steam table questions Direct extraction of data from tables 1) Critical point properties of water 2) Latent heat of vaporisation of water at 2.5 bar 3) Specific heat capacity of water at 45 c 4)enthalpy of ammonia at 20 c at 50 degrees c of superheat Interpolation 5) Calculate the saturated vapour pressure at 97.5 °C 6) Calculate t…

hi lm supposed to plot the Birge-Sponer plot but lm not sure about how l will find the points to plot in. according to some theory l read lm supposed to plot v'+1 against delta G( v' ) how then do l come up with these values and what do l need to calculate them. thanx!!

Consider a single-level cache with an access time of 3 ns, a line size of 32 bytes, and a hit ratio of H = 0.95. Main memory uses a block transfer capability that has a first word (2 bytes) access time of 40 ns and an access time of 5 ns for each word thereafter. (a) What is the access time when there is a cache miss? Assume that the cache waits until the line has been fetched from main memory and then re-executes for a hit. (b) Suppose that increasing the line size to 64 bytes increases the H to 0.97. Does this reduce the average latency?

Here's my attempt at the answer to the following question: Question: Use induction to prove that 3^n > n x 2^n for every natural number n ≥ 3 Answer: Step 1: 3^3 > 3 x 2^3 ⇒ 27 > 24 Step 2: Assume 3^k > k x 2^k Step 3: 3^(k+1) > (k+1) x 2^(k+1) ⇒ 3 x 3^k > k x 2^(k+1) + 2^(k+1) ⇒ 3^k + 3^k + 3^k > k x 2^k + k x 2^k + 2^k + 2^k. So am I allowed to use the assumption as a given to make the green and red parts of the inequality true? And am allowed to just plug in the base k value that would show the black parts of the inequality to be true? Another thing that I don't understand about induction is why we have to ass…

Hello, I need help on this topic as I am new to the field of Biotechnology. If anyone knows any articles on thiis topic: Fermentative Production of Ethylene & Propylene Glycol, kindly send me links of them. Thank you.

It is said that, " A kilogram of antimatter, annihilating with ordinary matter, can produce ten billion times the amount of energy released when a kilogram of TNT explodes." I'm attempting to figure out how much antimatter it would take to propel a ~800 kg object through space at 11 miles per second, for 20 light years. I've a very limited knowledge of E=mc2 and would appreciate a simplified explanation as to how I would even go about answering this problem and which formulas I would need. Thanks very much for any help

My teacher gave us an equation: nhcoohdeltaHhcooh+oh + nh30deltaHh30+oh = -(CcaldeltaTcal + cwaterVaciddeltaTacid + cwaterVbasedeltaTbase) & told us to find enthalpy of neutralization fo formic acid. given: hcooh + oh----h2o + hcoo h30+oh----2 h2o hcooh: t1=21.4, t2= 27.5, delta T=6.1 (* this was also the delta Tcal) naoh: 20.4, t2= 27.5 , delta T= 7.1 This is the information I calculated: 1. initial moles - nh30= 0.0632 (0.075mol - 0.011748mol) (which my teacher said to use the equation above with. We had to interpolate deltaHhcooh+oh ( which = -58517) However, I plugged in the values and got -57474.58. Please help. (* how to do the proper p…

Im writting about the synthesis of human serum albumin for my biology assignment, but I am having trouble finding clear infomation on its structure. So my questions are: How many polypeptide chains make up the HSA protein? How are the polypeptide chains bonded together? What are the domains and sub domains I keep reading about? Thankyou in advance for any infomation.

Hey all, just had some difficulty understanding these statements. Was wondering if I could get some help. Thanks. True or False? 1) Enzymes exhibit high stereospecificity, even on prochiral substrates, for example,distinguishing between different hydrogens on the same carbon of NAD(P)H. 2) Enzymes can enhance the spontaneity of a reaction, i.e. convert a process ( A-->B )that is endergonic so that it is exergonic. 3) By optimizing the proximity and orientation of substrates and key catalytic residues in the active site, an enzyme can couple two half reactions, one highly exergonic, the other somewhat endergonic, to yield an overall thermodyna…

i have found one of the question which i cant really answer could please help me explain this in detailed thank you