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An Airbus A320 jetliner has a takeoff mass of 75000 kg . It reaches its takeoff speed of 82m/s in 35 seconds. What is the thrust of the engines?
What are the four side products that are possible for the aldolcondensation between benzaldehyde and acetone?
How many seconds will be required to produce 1.0g of silver metal by the electrolysis of a AgNO3 solution using acurrent of 30A?
The voltage across which circuit element (resistor, capacitor or inductor) increases as the frequency is increased? Sketch the expected curve of V vs. f for this element.
500 ml of a .20-M sodium acetate is added to an equal volume of .20-M acetic acid creating a buffered solutionc.Use Le Chatlier's principle and the common ion effect to explain how the pH will be a
The incresase in the length of the rod is measured by a mocrometer screw arrangement to be 1.19mm. What is the linear thermal coefficient of expansion a for the rod? Show your work.
A liquid has a molar enthalpy of vaporization of 66 kJ/mol and amolar entropy of varporization of 94 J/mol. Calculate the normal boiling point of the liquid and the temperature at which the vapor pr
A uniform magnetic field of magnitude 0.70 T is directed perpendicular to the plane of a rectangular loop having dimensions 7.7 cm by 13 cm. Find the magnetic flux through the loop.
Based on the molar mass of anhydrous salt (1.25) calculate the moles of anhydrous salt. determine the smallest whole number ratio of moles of water to moles of anhydrous salt.
Iron rails are used to build a railroad track. If each rail is 10.000m long when it is placed in the track at a temperature of 20.0 C, how much space must be left between the rails so that they just
Assuming ideal efficiency, in that we can ignore friction in moving parts, inefficient heat transfer, etc., find the: (a) height to which one day's worth of coal must be piled in a square room 10m on
A 24 hour urine specimen was diluted to 2.000 L. After the solution was buffered to Ph 10, a 10ml aliquot was titrated with 27.32ml of 0.003960 M EDTA.
If you also want 15kW of heat in your home, how much power does the heat pump require to make this happen? (The answer is less than 15)
A boat takes 4.0 hr to travel 36 km down a river, then 6.0 hr to return. How fast is the river flowing?
You have a new job designing rides for an amusement park. In one wide, the rider's chair is attached by a 9.0-m-long chain to the top of a tall rotation tower.
It takes 15 kilowatt hours of electrical energy to produce 1 kg of aluminum metal from aluminum oxide by the Hall-Heroult process.Compare this value with the amount of energy necessary to melt 1 kgo
What minimum initial speed should the puck have been given so that it reached the teammate, assuming that the same force of kinetic friction acted on the puck everywhere between the two players?
A styrofoam cup calorimeter is calibrated by adding heat to the water in it with an electrical heater. When 1,350 J of heatis added the temperature of the calorimeter raises by 3.5 degreesC.
These lasers use pulses of very intense radiation to literally blast away material. The pulses are generally 10.243 ns long and carry an energy of 2.02 mJ each. If the radiation has a wavelength of
Write the Lewis formula that the best describes the charge distribution in the sulfuric acid molecule, H2SO4, according to the rules of formal charge.
Hydrogen peroxide solutions sold in drug stores contain 3.0%of H2O2 Hydrogen peroxide decomposes into water and oxygen gas. according to the balenced chemical equation
By what numerical factor does the multiplicity of the water change? (The physical system here is the water, first existing as ice then as vapor.) Express your answer as 10^some power.
Explain how the properties of polarity and hydrogen bonding affect such phenomena as surface tension and solubility in water.
How would you show by experiment how rusting is affected by environment? Would you expect the surfaces rusted evenly?
When we rotate the polarizer, does the intensity of the reflected ray change? Which kind of polarization takes place here? Why? Please use your best judgment when answering this question.