A radioactive silver foil (t 1/2 = 2.4 min) is placed near a Geiger counter and 1000

Question:

A radioactive silver foil (t_1/2 = 2.4 min) is placed near a Geiger counter and 1000 counts/s are observed at time t = 0.

(a) What is the counting rate at t = 2.4 min and at t = 4.8 min?

(b) If the counting efficiency is 20%, how many radioactive nuclei are there at time t = 0? At time t = 2.4 min?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Fundamentals of Ethics for Scientists and Engineers

ISBN: 978-0195134889

1st Edition

Authors: Edmund G. Seebauer, Robert L. Barry

See More Books

Question Posted: Nov 29, 2011 12:55 PM

See More Questions

At t = 0, a pure sample of radioactive nuclei contains N0 nuclei whose decay constant is . Determine a formula for the number of daughter nuclei, ND, as a function of time; assume the daughter is...
If there are N0 radioactive nuclei at time t = 0, the number that decay in some time interval dt at time t is dN = N 0 e t dt. If we multiply this number by the lifetime t of these nuclei, sum over...
State Newtons second law of motion. What are the limitations on the use of Newtons second law? Explain.
Green Landscaping Inc. is preparing its budget for the first quarter of 2017. The next step in the budgeting process is to prepare a cash receipts schedule and a cash payments schedule. To that end...
Chuck has 140 ft of fencing in which he wants to fence in two connecting, adjacent square pens with fencing between the two pens (see the figure). What will be the dimensions if the length of the...
You are the lead systems developer for your local university and have been told that the athletic department would like to modernize their online ticket sales and ordering system for sporting events....
Eggers Company reports the following for the month of June. Instructions (a) Compute the cost of the ending inventory and the cost of goods sold under (1) FIFO, (2) LIFO, and (3) average-cost.(Round...
Brennan's Bakery purchases Celeste's Cookies. Celeste's Cookies has assets of $ 1 2 1 million and liabilities for $ 6 3 million. Brennan records Goodwill of $ 3 7 million related to the purchase. How...
A screw jack with a 1-in. double-thread Acme screw is used to raise a load of 10,000 lb. A plain thrust collar of 2.0 in. mean diameter is used. Coefficients of running friction are estimated as 0.13...
The half-life of radium is 1620 y. Calculate the number of disintegrations per second of 1 g of radium, and show that the disintegration rate is approximately 1 Ci.
Using Table 40-1 to calculate the energy in MeV for the decay of (a) 226 Ra (b) 242 Pu. Table 40-1 Atomic Masses of the Neutron and Selected Isotopes Element Atomic mass, u Symbol Neutron 1.008 665...
Rylee sells some land in Nevada. She will be paid a lump sum of $60,000 in 7 years. Until then, the buyer pays 8% interest, compounded quarterly. (a) Find the amount of each quarterly interest...
Discuss the best promotional effort y have ever experienced. It can be an example from any aspect of the promotional mix. Describe what it is and why you found it to be so effective. If possible,...
Beginning inventory Merchandise Finished goods Cost of merchandise purchased Cost of goods manufactured Ending inventory Merchandise Finished goods Unimart Bare Manufacturing $ 316,000 $ 632,000...
Castile Incorporated had a beginning balance of $2,100 in its Accounts Receivable account. The ending balance of Accounts Receivable was $2,800. During the period, Castile recognized $55,000 of...
Novak Inc. issued $3,840,000 of 11%, 10-year convertible bonds on June 1, 2025, at 99 plus accrued interest. The bonds were dated April 1, 2025, with interest payable April 1 and October 1. Bond...
Steph and Maya are standing atop a building looking down at a swimming pool. The pool is 10 m away from the building, and the building is 25 m tall. To jump off the pool, Maya tells Steph to run at 5...
Let $\hat{f}_{n}(t)$ denote a kernel density estimator with kernel function $k$ computed on a sample $X_{1}, \ldots, X_{n}$. Prove that, \[E\left[\int_{-\infty}^{\infty} \hat{f}_{h}(t) f(t) d...
Describe a job you have had in the past or a job you are very familiar with. Indicate the negative aspects of the job and how it could be improved with current human resource management techniques.
What are the two principal types of mass spectrometry?
How wide is the central diffraction peak on a screen 2.30m behind a 0.048-mm-wide slit illuminated by 589-nm light?
When blue light of wavelength 440nm falls on a single slit, the first dark bands on either side of center are separated by 55.0o. Determine the width of the slit.
When violet light of wavelength 415nm falls on a single slit, it creates a central diffraction peak that is 9.20cm wide on a screen that is 2.55m away. How wide is the slit?
Create a concept map about the topic Continuity of a Function.
What role does access control play in operating system security, and how do models like discretionary access control (DAC) and mandatory access control (MAC) differ in their approaches to securing...
f(-2) using the given graph

A radioactive silver foil (t 1/2 = 2.4 min) is placed near a Geiger counter and 1000

Question:

Step by Step Answer:

a Using Equation 4012 R 24 500 B...View the full answer

Fundamentals of Ethics for Scientists and Engineers

Students also viewed these Modern Physics questions