*Uncertainty in background counts
The background counts (C) detected in 5 minutes by a Geiger counter is found to be C = 321. The background count rate per minute (C/min) can be easily determined. What is the uncertainty in this value (ΔC/min)?
Express your answer to one decimal place.
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*Uncertainty in background counts The background counts (C) detected in 5 minutes by a Geiger counter...
A Geiger counter registers a count rate of 7,600 counts per minute from a sample of a radioisotope. Ten minutes later, the count rate is 1,900 counts per minute. What is the half-life of the radioisotope?
How could you reduce the relative uncertainty in the background count rate in the Geiger counter?
Suppose counts recorded by a Geiger counter have an average of four counts per minute. What is the probability that the first count occurs is less than 3 minutes?
2.Suppose counts recorded by a Geiger counter have an average of seven counts per minute. a.What is the probability that there are no count in a 45 second interval? b.What is the probability that the first count occurs is less than 2 minutes?
A cup of hot coffee is placed on a counter and allowed to cool. The temperature in degrees Celsius) of the coffee minutes after being placed on the counter is given by the accompanying function. Complete parts (a) through (d) Tt) - 20.50 000 a) What was the original temperature of the hot colle? How can the original temperature of the hot coffee be found? Select the correct choice below and fill in the answer box to complete your choice...
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An assembly line with 17 tasks is to be balanced. The longest task is 2.4 minutes, and the total time for all tasks is 18 minutes. The line will operate for 450 minutes per day. a. What are the minimum and maximum cycle times? (Round your answers to 1 decimal place.) Minimum cycle time minutes Maximum cycle time minutes b. What range of daily output is theoretically possible for the line? (Round your answers to 1 decimal place. Enter...
An assembly line with 17 tasks is to be balanced. The longest task is 2.4 minutes, and the total time for all tasks is 18 minutes. The line will operate for 450 minutes per day. a. What are the minimum and maximum cycle times? (Round your answers to 1 decimal place.) Minimum cycle time minutes Maximum cycle time minutes b. What range of daily output is theoretically possible for the line? (Round your answers to 1 decimal place. Enter the...
3. While taking a daily one-hour walk, a person finds coins on the ground according to a Poisson process at a rate of 30 coins per hour, 60% of the coins are pennies, 20% are nickels and 20% are dimes. a. Determine Poisson process rate for each type of coin. b. What is an expression for the value of the coins found during an hour (Use P for number of pennies, N for number of nickels and D for number...
Question 10 The gas phase reaction 2A →B + C is carried out isothermally in a 30 dm3 well-mixed constant volume batch reactor. Pure A at an initial amount of 66.3 moles/dm3is placed into the reactor. If the rate of destruction of A is given by –rA = kCA, with k = 0.08 min-1, determine the concentration of A (in moles/dm3) after 5 minutes. Note that concentration is moles divided by volume. Express your answer to one decimal place.