A bacteria culture is known to grow at a rate proportional to the amount present. After one hour, 1000 strands of the bacteria are observed in the culture; and after four hours, 3000 strands. Find an expression for the approximate number of strands of the bacteria present in the culture at t=5 hours. Select the correct response: 6238.36 4326.32 12971 None
Q: Q1: For the calibration data of given below, (a) determine the static sensitivity of the system, (b)…
A: Part (a): Static sensitivity is the gradient of the straight line. In other words, it is slope of Y…
Q: 1 2ln(e 2.51 f0.5 3.7 Ref0.5)
A: For solution refer below images.
Q: A metal bar at a temperature of 100 deg. F is placed in a room at a constant temperature of 0 deg.…
A:
Q: Analyse and obtain the digital negative of the following 8 bits per pixel image of fig.1 58 45 29 27…
A:
Q: Consider the Exponential Weighted Moving Average that is used to estimate the Round Trip Time (RTT)…
A: In the exponential weighted moving average method, the maximum weighted is given to the targetted or…
Q: An experimental data set fits the equation: y– Yo -1-e Yoo -Yo shown in the table and also shown…
A:
Q: 3. Researchers have conducted a survey of 1600 coffee drinkers asking how much coffee they drink in…
A:
Q: A body at a temperature of 50 deg. F is placed outdoors where the temperature is 100 deg. F. If…
A:
Q: Ehe Determine alinear relationship between the given data. X:0.210.250:31035/0.4| 0.45 Ois yi 54…
A:
Q: c.) The black and red curves show data obtained for two different materials. Which material would…
A: Given question is related to machine design.
Q: Use Newton's Law of cooling to determine the k value in air temperature of 40 degC. If 30 mins ago…
A: Given data: θ0=40°C Need to determine the value of the constant "k".
Q: What is the value of x after evaluating the following equation given that a= 3 and b =2? x = (a*b >…
A: GIVEN: a=3 b=2 The given expression is X= (a*b>5)||(a==b) The operation is OR operation,which…
Q: pressure, psigBa bbl/STB Rs, scf/STBBg, bbl/scf 1530 941 3400 1532 941 1534 1.537 3200 941 3100 941…
A: Given Data we have to Find Total Formation value Bt=?at 1800psig
Q: A steel ball weighing 2 lb is dropped from a height of 3000 ft with no velocity. As it falls, the…
A:
Q: A certain radioactive material known to decay at a rate proportional to the amount present. If…
A: dN/dt = kt is integrated to arrive the solution. No = 50 mg
Q: One of the joints of a certain industrial robot has a type L joint with a range of 1.3 m. The bit…
A: Solution: Given Data: R=1.3 mB=25 bitsσ=0.08 mm
Q: For an ambient temperature equal to 20 °C, the relationship between voltage and temperature for a…
A: we know that V=IR where V=voltage I=current R=resistance and also resistance is directly…
Q: During a process, 30 J of work are done by a closed stationary system on its surroundings. The…
A:
Q: :Find the population variance for the following data se 24 19 32 15 28
A: Given data : Data set : 24 19 32 15 28 Number of data(N)=5
Q: For the linear thermal expansion experiment, the graph shows the measured variation of final length…
A: AS PER GUIDELINE I HAVE TO SOLVE ONLY FIRST QUESTION OF YOURS ,KINDLY POST REMAINING IN ANOTHER POST
Q: Using the data of Table 19.1, determine the length in inches of a simple pendulum that oscillates…
A: Write the formula for the time period of the pendulum for large oscillations. Here, is the time…
Q: If we follow a scale equivalent to 1 cm - 220 N, then a 68,720 kg shall be equivalent to how many…
A:
Q: Table Error function (erf) values erf (z) erf (2) erf (z) 0.55 0.5033 13 0.9340 0.025 0.0282 O 60…
A:
Q: At a certain location, the weight of a metal is 100 N. Its weight was reduced to 16% when brought to…
A:
Q: Select the correct response 88.56 m 61.75 m 81.56 m
A: GivenQ=50L/s=0.05 m3/sN=1450rpmNS≥760 rpm
Q: _____system uses measurements of disturbance variables to position the manipulated variable in such…
A: feedforward control is use to measure of disturbance variable
Q: F vs x for the determination of the spring constant 6 5 4 1. 0.780 0.785 0.790 0.795 0.800 0.805…
A: By equation of S. H. M by spring mass system. F = kx ( magnitude)
Q: According to the Law of Cooling of Bodies, the rate of change in a body's temperature over time is…
A: The temperature in the above question is given directly proportional to the temperature (T), A the…
Q: A resistance temperature detector (RTD) provides a resistance output R that is related to…
A: Given Data Resistance is : R=110 Ω Linear coefficient of resistance is : α=0.3925×10-3 /°C…
Q: A chunk of log floats in water, with 2 inches protruding above the surface. The object is put in oil…
A:
Q: In a random sample of 85 automobile engine crankshaft bearings, 10 have a surface finish that is…
A:
Q: Problem 7: On a hot day, the freezers in a particular ice cream shop maintain an average…
A:
Q: BACTERIAL POPULATION A bacterial colony is estimated to have a population of 151 + 10 13 + 6 t hours…
A: Given , Function of bacterial population with time after the introduction of a toxin
Q: A thermocouple was used to measure the temperature. Over the range of temperatures expected in the…
A: Given, T=(-0.008563+220V)V1=-8VV2=8Vn=11 At V1=-8VT1=(-0.008563+220×(-8))T1=-1760.0°CAt…
Q: 25 30 35 40 45 50 |12. 10° (R-h) х103 х103 х103 х103 х103 х103 Larson-Miller 100,000 |2.2- 10° (K-Һ)
A: stress=80MPa(11600psi)Temperaure=700°C(973k) To-Find:- Time to rupture =.................hours
Q: Consider the following dataset and separator. What is the width of margin (distance between the two…
A: Write the given expressions. wx+b=+1 ...... (1)wx+b=0 ...... (2)wx+b=-1 ...... (3)
Q: The results of a temperature jump test are shown below. At one hour, the temperature was suddenly…
A: Given: Initial temperature→T1=950 K Final temperature→T2=1000 K The equation for calculating…
Q: A batch test on the sedimentation of slurry containing 200kg/m (C.) is carried out experimentally…
A: Data given- Sedimentation of slurry= 2000 kg/m3 Underflow concentration = 1200 kg/m3 Height of…
Q: 1- A J-Type thermocouple referenced to 80°F has a measured output emf of 2.878 mV. What is the…
A:
Q: A body at a temperature of 50 deg. Fis placed outdoors where the temperature is 100 deg. F. If after…
A:
Q: Calculate the Accuracy and uncertainty of the given instrument. Write the equation and final answer…
A: We have to measurement vernier caliper
Q: Suppose that the temperature at C, tc, can be modeled by Oo + Oita + OztB where ta, tB are the…
A: Given data: tC=θo+θ1×tA+θ2×tB
Q: The same engineer decides to look into rates of cooling for liquids to experiment with different…
A: cooling rate equation modelled as, y = 48×0.99×t Where, y= temperature of the Liquid t= time in…
Q: The mass attached to the end of a helical pull spring statically forces the spring to pull, and 100…
A: Given:Deflection,δst=100 mmh=0.6 m
Q: 5 m3 tank contains chlorine at a gage pressure of 198.675 kPa and 27 deg. C after 3 kg of chlorine…
A:
Q: A tank initially holds 10 gal of fresh water. at t=0, a brine solution containing 1/2 lb of salt per…
A:
Q: In your biomechanical testing lab, you perform a series of compression tests to determine the…
A: Please note that you have to sort the data given for density in ascending order for…
Q: An integer is chosen at random from the first 100 positive integers. Find the probability that the…
A:
solve and show the solution
Step by step
Solved in 2 steps with 2 images
- A bacteria culture is known to grow at a rate proportional to the amount present. (a) Write down and solve a DE modeling this process. (Your solution will contain two unknown constants.) (b) After one hour, 1000 strands of the bacteria are observed in the culture; and after four hours, 3000 strands. Use this information to complete the determination of the DE. c) Find the approximate number of strands of the bacteria originally in the culture. (d) How long will it take to reach 10,000 strands of the bacteria in the culture.Suppose it was known that the cell of a given bacterial culture divide every 3.5 hours, if there are 1000 cells in a dish, to begin with, how many will be there be after 12 hours?a) Separate the rod into 4 control sections, each with a node in the centre, then use finite-volume analysis to estimate the temperature along the length of the rod. b) Separate the rod into 4 sections and repeat (a) with equal both temperature values and beginning conditions using the finite difference method (if necessary). c) Write down and analytically compare with (a) and (b) differential equation for the temperature distribution along the rod. d) Compare the results (a), (b) and (c) by using a graph and differences.e) How to improve the results from (a) and (b)? Show it.
- What is the linearity (r-) value of the following concentration and absorbance values: SAMPLE CONCENTRATION ABSORBANCE 1 0.178 0.2127 0.274 0.2715 0.473 0.3892 0.574 0.4568 0.673 0.5327 16 0.864 0.6283 0.9876 0.9976 0.9786 0.9562The number of contaminating particles on a silicon wafer prior to a certain rinsing process was determ for each wafer in a sample size 100, resulting in the following frequencies: Cumulative Cumulative Number of Particles Frequency Number of Particles Frequency 8 84 3 9. 88 2 6. 10 93 3 18 11 96 4 29 12 97 5 44 13 99 62 14 100 7 72 a) What proportion of the sampled wafers had (P > 5) ? b) What proportion of the sampled wafers had between (4Answer the following questions based on scaling arguments, i.e., by applying “the variable X must be proportional to the Zth power of variable Y because of some relevant physical principle”-type reasoning. A. In a surface passivation process for Si wafers, the required processing time to create a 0.1 micron thick SiO2 layer on a pure Si wafer was 2 hours. Estimate the process time required to create an SiO2 layer of thickness 0.15 microns on a pure Si wafer under identical processing conditions. B. A puddle of volatile liquid of initial thickness of 1 cm was found to evaporate to form a thinner 0.5 cm layer in 1 day. How much longer would it take for the liquid layer to evaporate completely?nces Mailings Review View Help ntain viruses. Unless you need to edit, it's safer to stay in Protected View. Enable Editing 1 2. 8.1 9 10 1 11 12 1 13 14 T 15 1 16 17 1 1 [8] QUESTION 2 Calculate the length of the resistor of a circular wire used in a heater element connected to a 240V supply and the heater consumes 8 joules of energy in 0,25 seconds. The resistor element is made of aluminium and it has a uniform cross-sectional area with a diameter of 0,00016 inches. Hints: linch = 25,4 mm, resistivity of aluminium = 2,825 x 10-6 Ocm %3D [S] QUESTION 3 A de shunt motor after running for several hours on constant mains of 350 V takes a field currentA thermocouple was used to measure the temperature. Over the range of temperatures expected in the experiment, a linear regression analysis was performed for the temperature as a function of voltage. The best-fit equation was T = (-0.008563 + 220*V), where V is the thermocouple voltage. The voltage was fed into a 11-bit A/D converter with a voltage range of -8 V to 8 V. Determine the measurement resolution (in °C) due to the ADC? O 0.851 None O 3.113 1.710 0.393 4.960 1.144 O 3.797The concentration of salt ? g/L in homemade soap is given as a function of time as follows: ??/dt = (0.37? − 0.03)? At the initial time, ? = 0 minute, the salt concentration is 20 g/L. Choose a step size in a range of 1 < h ≤ 1.5 minutes for the interval from 0 to 8h minutes and apply THREE (3) numerical methods to compute the salt concentration. Select the best numerical method to estimate the salt concentration and justify your answer. method 1: ruler's methodO True O False QUESTION 3 Compute the expected properties of modulus of elasticity (Ec) of a composite made from S-glass fibers and a Polyester matrix. The volume fraction of fibers is 30%. (Unit is psi.) Properties of Sample Matrix and Filler Materials Tensile strength Tఅబండి Specific weight bai MPa 10 psi GPa Iblin Matrix materials: Polyester Ероху Aluminum 10 18 45 69 124 310 1170 0.40 0.56 10.0 165 2.76 3.86 69 114 0.047 12.7 0.047 12.7 0.100 0.160 27.1 Titanium Filler materials: 170 43.4 S-glass Carbon-PAN Carbon-PAN (high-strength) Carbon (high-modulus) Aramid 600 470 4140 3240 5650 2200 3450 12.5 33.5 40 100 86.2 231 276 690 131 0.09 0.064 24.4 17.4 17.7 820 325 500 0రవ 0.078 0.052 21.2 19.0 14.1 Click Save and Submit to save and submit. Click Save All Answers to save all answers. earchTo determine the thermal conductivity of a structural material, a large 15-cm-thick slab of the material is subjected to a uniform heat flux of 2500 W/m2 while thermocouples embedded in the wall at 2.5 cm. intervals are read over a period of time. After the system had reached equilibrium, an operator recorded the thermocouple readings shown below for two different environmental conditions: Distance from the Surface (cm) Temperature (C) Test 1 0 40 5 65 10 97 15 132 Test 2 0 95 5 130 10 168 15 208 From these data, determine an approximate expression for the thermal conductivity as a function of temperature between 40 and 208C.Macro farms Ltd can purchase two types of fertilizer which contain the following percentage Nitrate Phosphate Potash Type X 18 5 2 Type Y 3 2 5 For certain type of crop, the following minimum quantities (kg) are required Nitrate Phosphate Potash 100 50 40 Type X cost GHS10 per kg and type Y cost GHS5 per kg. The company currently buys 1,000 kg of each type and wishes to minimize it expenditure on fertilizers.Required 1. What is the minimum expenditure that can be incurred on fertilizer? 2. Find the savings the company can make by switching from it current policy to your recommendation.SEE MORE QUESTIONS