What is the activity after one day

Assignment Help Physics
Reference no: EM13954333

1. A source has a half-life of 12 hours and an initial activity of 10mCi. After 4 days what is its activity?

2. Calculate the % of activity remaining in a source after 10 half lives.

3. a. A radionuclide decays 1% in one day. Calculate the half life.

b. A radionuclide decays 70% in one day. Calculate the half life.

4. A sample of 10.0 mCi of radioisotope decays 1.2 % in a single day

a. What is the activity after one day?

b After 30 days?

5. A sample of Cs- 137 initially contains 1000 atoms. How many Cs- 137 atoms does the sample contain after 2 years?

Reference no: EM13954333

Questions Cloud

What would be the image snr for a 30-min scan : In a nuclear medicine scan using 99mTc, the image SNR for a 30-min scan was 50:1 for an injected radioactive dose of 1 mCi (3.7x10^7 disintegrations per second). Imaging began immediately after injection. If the injected dose were doubled to 2 mCi,..
Reflect on the concept of healthcare ethics : Reflect on the concept of healthcare ethics and your future role as a healthcare administrator. Many healthcare administrators become consumed with the daily operations, such as balancing the budget, that they forget the needs of the patients,
Globalization must demonstrate similar persistence : Wal-Mart continues to face severe growth challenges, yet it is intent on growing. Other companies who which to pursue a similar path to globalization must demonstrate similar persistence.
Determining the balance in chen capital account : 1. What is the balance in Chen's capital account at the end of the year? 2. Explain why the balance in Chen's capital account is different from the amount of cash on hand.
What is the activity after one day : A source has a half-life of 12 hours and an initial activity of 10mCi. After 4 days what is its activity? Calculate the % of activity remaining in a source after 10 half lives.
Income distribution of a partnership : Kay Katz and Doris Kan are partners in a dry-cleaning business. The partnership agreement specifies the manner in which income of the business is to be distributed. Kay is to receive a salary of $40,000 for managing the business. Doris is to recei..
What activity should the seeds have on the day of delivery : For a prostate seed implant, I- 125 seeds with an activity of .350 mCi are needed on the day of the implant. the seeds are to be delivered one week prior to the implant. what activity should the seeds have on the day of delivery?
Thinking back on the last few months : Thinking back on the last few months, consider a time when you encountered a friend or business associate who promised or agreed to do something but did not follow through. For example, did someone agree to sell you something but at the last minut..
Problem regarding the sole proprietorships : On May 1, Chong Yu deposited $120,000 of his own savings in a separate bank account to start a printing business. He purchased copy machines for $42,000. Expenses for the year, including depreciation on the copy machines, were $84,000. Sales for t..

Reviews

Write a Review

Physics Questions & Answers

  Find the magnitude of the resulting magnetic field

A sphere of radius R is uniformly charged to a total charge of Q. It is made to spin about an axis that passes through its center with an angular speed ω. Find the magnitude of the resulting magnetic field at the center of the sphere.

  Find the equivalent resistance

A resistor is in the shape of a cube, with each side of resistance  R . Find the equivalent resistance between any two of its adjacent corners.

  What is the electric field at the location

Question: Field and force with three charges? What is the electric field at the location of Q1, due to  Q 2 ?

  What is the maximum displacement of the bridge deck

What is the maximum displacement of the bridge deck?

  What is the magnitude of the current in the wire

What is the magnitude of the current in the wire as a function of time?

  Blackbody

Questions on blackbody, Infra-Red Detectors & Optic Lens and Digital Image.

  Gravity conveyor

Illustrate the cause of the components accelerating from rest down the conveyor.

  Calculate the dc voltage

Calculate the dc voltage applied to the circuit.

  Quadrupole moments in the shell model

Quadrupole moments in the shell model

  Determine the tension in each string

Determine the tension in each string

  Introductory mechanics: dynamics

Calculate the smallest coefficient of static friction necessary for mass A to remain stationary.

  Evaluate maximum altitude

Evaluate maximum altitude?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd