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Question- 1) As a city planner, you receive complaints from local residents about the safety of nearby roads and streets. One complaint concerns a stop sign at the corner of Pine Street and 1st Street. Residents complain that the speed limit in the area (55 mph) is too high to allow vehicles to stop in time. Under normal conditions this is not a problem, but when fog rolls in visibility can reduce to only 155 feet. Since fog is a common occurrence in this region, you decide to investigate. The state highway department states that the effective coefficient of friction between a rolling wheel and asphalt ranges between 0.689 and 0.770, whereas the effective coefficient of friction between a skidding (locked) wheel and asphalt ranges between 0.450 and 0.617. Vehicles of all types travel on the road, from small VW bugs weighing 1170 lb to large trucks weighing 8310 lb. Considering that some drivers will brake properly when slowing down and others will skid to stop, calculate the miminim and maximum braking distance needed to ensure that all vehicles traveling at the posted speed limit can stop before reaching the intersection.
2) Given that the goal is to allow all vehicles to come safely to a stop before reaching the intersection, calculate the maximum desired speed limit. (Round your answer to the nearest whole number.)
Any expert will able to provide correct answer for the above question.
Problem- The decomposition of NH2OH shows a k value of 0.237x10^-4 L/mol.s at 0C and 2.64x10^-4 L/mol.s at 25C. The activation energy is 65.2 kJ/mol. Calculate A (pre exponential factor).
A solution contains 15mL 0.1 M KI, 15 mL of DI water and 5 mL o f3% H2O2. After the decomposition of H2O2 is complete, you titrate the solution with 0.1 M AgNO3. If the catalyst, I-, is not consumed in the reaction and is completely recovered, wha..
a small amount do aqueous ammonia is added to a Cd^2+ solution and a precipitate forms. Write the equation for this reaction.
Two unknowns, X and Y, both having the molecular formula C4H8O, give the following results with four chemical tests. Propose a structure for X consistent with this information.
How would you prepare 250mL of a buffer having a pH of 3.60 using 0.500M NaOH and 0.500M of HNO2. Would you calculate the molarities of the conjugate acid and base pair and then somehow get the volumes from that
Calculate the increase of entropy (in J/K) when 72 g of ice melts at 0 ºC and 1 atm. (The heat of fusion for ice is 6,000 J/mol.)
A specific heat of gold is .129J/g deg. Celsius. What is the molar heat capacity of gold
Why does aluminum hydroxide readily dissolve in concentrated NaOH but not in concentrated NH3? Please give a thorough explanation, not just a short answer.
A feed stream contains H2 CO as well as a trace of CH4. Pure CH3OH is produced by income of a reactor, separator and recycle with purge to remove the non-reactive CH4.
Approximately 35 mg of a dried brass sample (accurately measured) is put into a 250-mL Erlenmeyer flask. About 20 mL of H2O and 10 mL of concentrated HNO3 is added.
Determine the heats of formation or the steric energies of the exo-and endo-anhydride adducts using a molecular mechanics program. What do these energies tell you about the mechanism of the reaction
a compound containing nitrogen and oxygen is decomposed in the laboratory and produces 1.78 of nitrogen and 4.05 of
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