What is the half-life, t½, (in hr) when the concentration was 100 mg/L?

Q: 2. If the recommended effective dose in the lab is 500 µSv per week, find the time has been expended…

A: Given that:- Q=500 μSv=500×10-6 SvR=100 nSv/hr=100×10-9 Sv/hrt=?

Q: After the first covid-19 case found in Olde town, a group of volunteers started counting the number…

A: Required : Meaning of the number 0.2

Q: SC.8.P.8.4 A tudent measured o 4.5 cm' pece of alununun and calculated its density to be 2.7 g/cn'.…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: if a record sample has rate of 44100Hz, how many samples are required to capture 0.25s?

A:

Q: hromium-51 is used in imaging red blood cells and has an effective half-life of 27 days.   If a dose…

A: Given: The half-life time of the red blood cell is 27 days. The initial activity is 24 μCi. The…

Q: Consider the following data from the analysis of mercury using cold vapor atomic a spectrometry:…

A: GivenS=1.09 CHg+0.298

Q: A certain chemical reaction requires of 4.82 X104 Jenergy input for it to go. What is the increase…

A: Energy, E = 4.82 X104 J

Q: If the absorbed dose is 50 rad and Q is 10. What is Dose equivalent in rem and Sv

A: Given Absorbed dose= 50 rad= 0.5 Gy Q=10

Q: Graphs that show the relationship between radiation received and the organism's response are called:…

A: A graph shows the relation ship between radiation received and the organisms response are known as…

Q: gas error of 0.3% in measuring T and an error of 0.2% in measuring V, approximately the greastest…

A: Given data as per question error in T  =  0.3% error in V   =  0.2%

Q: N-type sample has minority carrier concentration of 10^1/m ^3 , if ni=2.5×10^1m ^3 , the majority *…

A:

Q: When gamma is 1.88, what is beta

A:

Q: What is the dose in mSv for 1.5 mGy of α exposure?

A: The energy radiation for α exposer is 20RBE,

Q: ph in this question, calculate the UK daily background dose (in mSv/day). Give your answer to 5…

A: SOLUTION a) one week has 7 days       therefore, 32 weeks have 32x7 = 224 days   b) The dosage given…

Q: How do you convert 6ug(micrograms)/g to mg/kg?

A:

Q: A GM counter has dead time of 250s,it records 20,000 counts per minute,what is the actual count rate

A: Actual count rate=?

Q: If a sample emits 2000 counts per second when the detector is 1 meter from the sample, how many…

A: Counting rate is inversely proportional to the square of the distance to the source

Q: The volume of air we breathe in is about 10% of lung capacity per breath. If the level of PM2.5 is…

A:

Q: L = mv is the equation for ??

A:

Q: If you purchased 3.61 Mu Ci of sulfur-35, how many disintegrations per second does the sample…

A: Given: Initial amount of sulfur-35 = 3.61 x 10-6 Curieand 1 Curie = 3.7 x 1010 Bq1 Bq = 1 decay/s

Q: The advertising for a new genetic screening of fetuses, through sampling the mother's blood, claims…

A: Accuracy of a lab result (P)= 99.9% Number of tests done in a year = 4 million

Q: What is the exposure rate at 30 cm from a vial containing 20 mCi (740 MBq) of 15'1?

A: 20 mCi Point source, distance values are d1 =0.30 m and d2 =  1 meter , I 2 = .22 Mr/ hr/ mci * 20…

Q: An adult dose of cisatracurium, a skeletal muscle relaxant, is 3.4 mg.  If this drug is administered…

A: Given: Adult dose of cisatracurium: 3.4mg Body surface area of the child : 0.75 m2. The relation…

Q: Sarah observed her water intake per day. Find her average water intake and the its variance. Day…

A:

Q: If a sample emits 2000 counts per second when the detector is 10 meters from the sample, how many…

A:

Q: How many microstates are created when 4 particles are distributed into 2 boxes?

A: Given data :     Number of particles (N) = 4     Number of boxes = 2 Formula :    Here, number of…

Q: If a vial contains 600 MBq of iodine-123 at 12:30 (14 june 2019), how much radioactivity will be…

A:

Q: Assume the half-life of a substance is 32 days and the initial amount is 168.199999999996 grams. (a)…

A:

Q: between occurrences fraction of the total er

A: Amplitude of angular oscillator =A  angular frequency of angular oscillator = w  KE=1/2mw2(A2-y2)…

Q: Which of the following would be used to perform a survey of an area in which a small amount of…

A: There are different types of detectors, their use is mainly dependent upon range and sensitivity.…

Q: A temperature rise of 3.10 ± 0.20 °C was measured when a reaction was carried out in a calorimeter…

A: Write the given values using suitable variables. Here T signifies temp, C signifies heat capacity,…

Q: What is said to be the main difference between cohort studies and experimental studies?

A: Experimental studies involve active manipulation of exposure (treatment/alternative treatment)…

Q: What is the mass number of germanium?

A: Mass number : The total number of protons and neutrons  present in the nucleus is called the mass…

Q: What is the bulk density of the dry soil?

A: The expression for the bulk density is,

Q: The heights of every person in a population have a bimodal distribution with a mean of 62 inches and…

A: (a) Write the given data. Bimodal distributionμ=62 inchesσ=3 inchesN=25

Q: Based on a survey of a random sample of 900 adults in the United States, a journalist reports that…

A: Solution:

Q: A technician is in an area for 10 minutes and the reading on the survey meter is 5mR/h. What dose of…

A:

Q: SA person tries a new diet where they eat onlLy eggs as their protein source. .They lost 1.7 ke in a…

A: Given Weight lost in one week = 1.7 kg Average rate of weight loss R = 1.7 kg / week 1 kg = 1000 g 1…

Q: If the dose rate from a sample of Ra-223 was found to be 5.0 × 10-5 mSv per hour at 1.8 metres,…

A:

Q: Which of the following detectors can in principle be used as a dose-rate monitor? Give the best…

A: