Q & A - Science

Q & A

• A car is approaching the hill shown in when it suddenly runs out of gas Neglect any friction Can the car make it to the top of the hill by coastin What is the car's speed after coasting down the othe A  car is approaching the hill shown in when it suddenly runs out of gas Neglect any frictionCan the car make it to the top of the hill by coastinWhat is the cars speed a...
• What are the basic principles of using absorption spectroscopy to determine the concentration of a substance in a solution Why is a reference solution needed when determining the absorbance Why is a b What are the basic principles of using absorption spectroscopy to determine the concentration of a substance in a solutionWhy is a reference solution needed when determin...
• Briefly describe the basic principles of using absorption spectroscopy to determine the concentration of a substance in a solution Why is a reference solution needed when determining the absorbance  Briefly describe the basic principles of using absorption spectroscopy to determine the concentration of a substance in a solution Why is a reference solution needed whe...
• A crystalline specimen is irradiated with X rays of specific wavelength Bragg reflexion is observedat degreeTheta and degree with respect to the direction of incident beam Calculate a possiblevalue o A crystalline specimen is irradiated with X rays of specific wavelength Bragg reflexion is observedat  degreeTheta and degree with respect to the direction of incident be...
• What is the effect on the experimental result when each of the following happens Adding first instead of KI Add solution slowly Too much or too little of was used For the reaction instead of S is  What is the effect on the experimental result when each of the following happens Adding first instead of KI Add solution slowly Too much or too little of  was usedFor th...
• Part A Prelab Questions Briefly describe the basic principles of using absorption spectroscopy to determine the concentration of a substance in a solution Why is a reference solution needed when deter Part A Prelab Questions Briefly describe the basic principles of using absorption spectroscopy to determine the concentration of a substance in a solutionWhy is a referen...
• Introduction According to plate tectonic theory Earth surface is divided into moving plates A plate is a large mobile slab of rock that is part of Earth rigid out shell known as the lithosphereThis i Introduction  According to plate tectonic theory Earth surface is divided into moving plates A plate is a large mobile slab of rock that is part of Earth rigid out shell ...
• A kid kicks a soccer ball from ground level with an initial velocity of at an angle of degrees above the horizontal What is the distance to the point where the football hits the ground if we neglect A kid kicks a soccer ball from ground level with an initial velocity of  at an angle of degrees above the horizontal What is the distance to the point where the football ...
• Consider the following blood inventory problem facing a hospital There is need for a rare blood type namelytype ABRh negative blood.The demand D in pints over any day period is given by Note that th Consider the following blood inventory problem facing a hospital There is need for a rare blood type namelytype ABRh negative blood.The demand D in pints over any day per...
• An electric quadrupole can be constructed by placing four charged objects at the corners of a square Figure The objects are identical except for the charge they carryThe two objects in one diagonally An electric quadrupole can be constructed by placing four charged objects at the corners of a square Figure  The objects are identical except for the charge they carryThe...
• The resting potential of any neuron is always a negative value Discuss first why this represents a steady state but not equilibrium Then discuss what biological value there is in the neuron having a r The resting potential of any neuron is always a negative value Discuss first whythis represents a steady state but not equilibrium Then discuss what biologicalvalue there...
• Your new bossMrFox offers you the following salary proposition for a job you are considering He will pay you the first day but you must pay him a commission of so your first days salary would be Each Your new bossMrFox offers you the following salary proposition for a job you are considering He will pay you the first day but you must pay him a commission of so your fi...
• Calculating the reaction orders From your measurements what are the reaction orders with respect to each of the two reactants What is the rate expression for the uncatalyzed reaction What is the to  Calculating the reaction orders  From your measurements what are the reaction orders with respect to each of the two reactants What is the rate expression  for the uncat...
• Project Instruction and Guidelines Data Analytics is a subject that can be best appreciated only when applied to a dataset you are familiar withThe aim of this project is to achieve that Do not view  Project Instruction and GuidelinesData Analytics is a subject that can be best appreciated only when applied to a dataset you arefamiliar withThe aim of this project is ...
• A lab network consisting of computers was attacked by a computer virus This virus enters each computer with probability independently of other computers Find the probability that the virus enters at A lab network consisting of  computers was attacked by a computer virus This virus enters each computer with probability independently of other computers Find the probabi...
• . (20%) The gas-phase reaction 2?? + 4?? ? 2?? Reaction 1 which is first-order in A and second-order in B is to be carried out isothermally in a plugflow reactor. The entering volumetric flow rate is  The gas-phase reactionwhich is firstorder in A and secondorder in B is to be carried out isothermally in a plugflow reactor The entering volumetric flow rate is  and the...
• a. (9%) If the reversible, elementary, gas phase reaction occurs at 350 K in a constant volume reactor of 2500 mL, with an initial charge to the reactor of 2 mol of A, 3 mol of B, and 0.5 mol of C, fi  If the reversible  elementary gas phase reaction occurs at  in a constant volume reactor of with an initial charge to the reactor of mol of  find the equilibrium convers...
• A m high and long wall under construction and its bracing are shown inFigure The wall is in stable equilibrium without the bracing but can pivot at its baseC alculate the force exerted by each of the A m high and long wall under construction and its bracing are shown inFigure The wall is in stable equilibrium without the bracing but can pivot at its baseC alculate the...
• Aquatic Geochemistry Homework February In a chemical reaction mechanism that involves a reactive intermediate how long do we have to wait to make a steady state approximation Lets consider the exam Aquatic Geochemistry Homework  February  In a chemical reaction mechanism that involves a reactive intermediate how long do we haveto wait to make a steady state approxim...
• A plant can manufacture golf clubs per day at a total daily cost of golf clubs per day for a total cost of Please show all work and calculations Assuming that daily cost and production are linearl A plant can manufacture  golf clubs per day at a total daily cost of  golf clubs per day for a total cost of Please show all work and   calculations Assuming that daily c...
• If a rock is thrown upwards on the planet Mercury with a velocity of its height in meters t seconds later is given by f Find the average velocity for the time period beginning when t seconds and la  If a rock is thrown upwards on the planet Mercury with a velocity of  its height in meters t seconds later is given by f  Find the average velocity for the time period b...
• Problem 4 contd Exactly how many floating point operations or flops additions subtractions multiplications divisions does this efficient code from part a need to calculate L and u Problem 4 contd Exactly how many floating point operations or flops additions subtractions multiplications  divisions does this efficient code from part a need to calculate L and u
• A plant can manufacture golf clubs per day at a total daily cost of golf clubs per day for a total cost of Please show all work and calculations ssuming that daily cost and production are linearly  A plant can manufacture  golf clubs per day at a total daily cost of  golf clubs per day for a total cost of  Please show all work and calculations ssuming that daily co...
• Abeba walks to school She walks minutes She meets her friend Makeda they talk for minutes and then carry on walking to school They walk minutes Draw a displacement time graph to show Abeb journe Abeba walks to school She walks  minutes She meets her friend Makeda they talk for  minutes and then carry on walking to school They walk  minutes Draw a displacement tim...
• Product Development and Marketing Assessment Task Each student is asked to prepare a statement of product development and marketing activities that facilitate the utilisation of a selected wood res Product Development and Marketing Assessment TaskEach student is asked to prepare a statement of product development and marketing activities that facilitate the utilisat...
• What is the net electric force on charge B Suppose that a Express your answer to two significant figures and include the appropriate units Enter negative value if the force is directed downward and po What is the net electric force on charge B Suppose that a Express your answer to two significant figures and include the appropriate units Enter negative value if the for...
• An object of mass on a frictionless horizontal table is connected to an object of mass through a very light pulley and a light fixed pulley as shown in Figure If a are the accelerations of respect An object of mass  on a frictionless horizontal table is connected to an object of mass  through a very light pulley and a light fixed pulley as shown in Figure  If a are...
• For point charge and point charge C located at the same positions as in the previous question determine the direction of the net electric field E at the origin Your answer should be an integer do not For point charge  and point charge C located at the same positions as in the previous question determine the direction of the net electric field E at the originYour answe...
• For point charge and point charge located at the same positions as in the previous question respectively determine the magnitude of the net electric field E at the origin Your answer should be a num For point charge and point charge located at the same positions as in the previous question  respectively determine the magnitude of the net electric field E at the origi...
• Circular Motion Practice Problems If you attach a ball to a rope and swing it at a constant speed in a circle above your head the ball is in uniform circular motion In which direction does it accelera Circular Motion Practice Problems If you attach a ball to a rope and swing it at a constant speed in a circle above your head the ball is in uniform circular motion In wh...
• A toy car runs off the edge of a table The table is high and the car lands from the base of the table How long does It take the toy car to hit the ground What was the velocity of the toy car on the  A toy car runs off the edge of a table The table is high and the car lands  from the base of the table How long does It take the toy car to hit the ground What was the v...
• Question points Which of the following of the Golgi complex Selected Answe vesicles Question points Which of the following does possess a double membrane Selected Answer: ribosome Question out of  Which of the following of the Golgi complex Selected Answe vesicles  Question  points Which of the following does possess a double membrane Selected Answer: ribosome Que...
• if a cylinder tank measures m in length and m in diameter with hemispherical ends is full of liquid and a mass of liquid is calculate the following Density Specific weight Specific gravity elative if a cylinder tank measures  m in length and  m in diameter with hemispherical ends is full of liquid and a mass of liquid is calculate the following DensitySpecific weig...
• The project you are about to undertake is a requirement for Honours classification in your degree The aim of the project is to enable you to develop your research abilities and to carry out an indepen The project you are about to undertake is a requirement for Honours classification inyour degree The aim of the project is to enable you to develop your researchabilities...
• Suppose a box has a width height and length which can change at most What is the percent error of the change in volumed Suppose a box has a width height and length which can change at most What is the percent error of the change in volumed
• Upon completion of this laboratory you will be able to Define protein carbohydrate lipid and nucleic acid Define a dehydration reaction and relate this reaction to the structure of a macromolecule D Upon completion of this laboratory you will be able to Define protein carbohydrate lipid and nucleic acidDefine a dehydration reaction and relate this reaction to the str...
• Option #1: Having a Blast with Active Volcanoes Choose an active volcano from somewhere on Earth from this online list Links to an external site In a wellcrafted essay cover all of the questions below Option #1: Having a Blast with Active VolcanoesChoose an active volcano from somewhere on Earth from this online list Links to an external site In a wellcrafted essay cov...
• Calculate a confidence interval for the unknown population mean of IncomeTest at the level of significance whether the average age of people is different to Test at evel of significance whether the Calculate a  confidence interval for the unknown population mean of IncomeTest at the level of significance  whether the average age of people is different to Test at eve...
• A chemical reaction takes place in a container of cross sectional area As a result of the reaction piston is pushed out through cm against an external pressure of Calculate the done by the system A chemical reaction takes place in a container of cross sectional area  As a result of the reaction piston is pushed out through cm against an external pressure of Calcul...
• Family History Taking/Pedigree Construction Assignment Mary Jones Fictitious Family History Mary Jones age s presenting to the family practice office as a new patient due to a change in her insurance Family History Taking/Pedigree Construction AssignmentMary Jones Fictitious Family HistoryMary Jones age s presenting to the family practice office as a new patient due t...
• For this exercise you will tell your classmates what you learned about the communication theory you researched and why you think it the right one for your final project You should be able to use the m For this exercise you will tell your classmates what you learned about the communication theory you researched and why you think it the right one for your final project Y...
• The timekeeper for a particular mile race uses a stopwatch to determine the finishing times of the racers He then calculates that the mean time for the first three finishers wasinutes After checking The timekeeper for a particular mile race uses a stopwatch to determine the finishing times of the racers He then calculates that the mean time for the first three finish...
• Three packages are placed on a conveyor belt that is at rest Between the belt and both packages coefficient of static and kinetic friction are respectively Between the belt and both package B coeffic Three  packages are placed on a conveyor belt that is at rest Between the belt and both packages coefficient of static and kinetic friction are respectively Between the b...
• My team was tasked with tutoring a group of peers about the components and functions of the human cell We have to Create an slide presentation that serves as a visual tour of the human cell In the pr My team was tasked with tutoring a group of peers about the components and functions of the human cell We have to Create an slide presentation that serves as a visual tou...
• Find the slope of the curve y at any point What is the slope at thepoint Where does the slope equal What happens to the tangent to the curve at the point as a changes Find the slope of the curve y  at any point  What is the slope at thepoint  Where does the slope equal What happens to the tangent to the curve at the point as a changes
• Prove that Kd is a family of good kernels Show that if is bounded and supported in a bounded set then Kd defines an approximation to the identity Show that if Kd is a family of good kernels then for Prove that Kd is a family of good kernels  Show that if is bounded and supported in a bounded set then Kd definesan approximation to the identityShow that if Kd is a fami...
• Draw line structures for all of the possible structural isomers of that do nothave membered rings Next to each isomer write their correct names Use a table laid out like the template on the next Draw line structures for all  of the possible structural  isomers of that  do nothave  membered rings Next to each isomer write their correct  names Use a table laid out ...
• Students in the new MBAclass at a state university has the following specialization profil Finance Marketing OperationsandSupply ChainManagement nformation Systems Find the probability that a stud Students in the new MBAclass at a state university has the following specialization profilFinance Marketing OperationsandSupply ChainManagement nformation Systems  Find ...
• Smokey is a park ranger who really enjoys the great outdoors On his days off Smokey hikes over the mountain and through the woods to his grandmothers remote backcountry cabin While hiking Smokey gets Smokey is a park ranger who really enjoys the great outdoors On his days off Smokey hikesover the mountain and through the woods to his grandmothers remote backcountry ca...
• A man weighs a fish with a spring scale attached to the ceiling of an elevator While the elevator is at rest he measures a weight of What weight does the scale read if the elevator accelerates upward A man weighs a fish with a spring scale attached to the ceiling of an elevator While the elevator is at rest he measures a weight of What weight does the scale read if th...