A sample of material contains 2.00 x 1015 atoms. The sample initially consists entirely of a radioactive sub- stance A with a half-life of 1000 s. Atoms of A decay into the stable material B. 40.12 (a) What is the decay-constant of sub- stance A (in s-l)? (b) What is the initial activity of sub- stance A (in Bq)? (c) What is the initial activity of sub- stance A (in Ci)? The activity of the sample and the amount of substances A and B are recorded at the following times: (i) 1000 s (ii) 2000 s (iii) 3000 s (iv) 4000 s Use this information to answer the fol- lowing questions: (d) What is the activity of the sample at each of these times (in Ci)? (e) What is the activity of the sample at each of these times in terms of its initial activity? (f) How many atoms of substance A are there in the sample at each of these times?

A sample of material contains 2.00 x 1015 atoms. The sample initially consists entirely of a radioactive sub- stance A with a half-life of 1000 s. Atoms of A decay into the stable material B. 40.12 (a) What is the decay-constant of sub- stance A (in s-l)? (b) What is the initial activity of sub- stance A (in Bq)? (c) What is the initial activity of sub- stance A (in Ci)? The activity of the sample and the amount of substances A and B are recorded at the following times: (i) 1000 s (ii) 2000 s (iii) 3000 s (iv) 4000 s Use this information to answer the fol- lowing questions: (d) What is the activity of the sample at each of these times (in Ci)? (e) What is the activity of the sample at each of these times in terms of its initial activity? (f) How many atoms of substance A are there in the sample at each of these times?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Related questions

Q: how did you get n=3?

Q: If A- (3, 0, -5) and B= (-2, 1, 6), what is the magnitude of Å+B? 4.7 O 3.7 O 2.7 O 1.7 O

A: Given data: The vector, A→=xA,yA,zA=3,0,-5 The vector, B→=xB,yB,zB=-2,1,6 Let R→ be the resultant…

Q: Boyle's Law states that when a sample of gas is compressed at a constant temperature, the pressure P…

Q: L03 Use analytical and computational methods for solving problems by relating sinusoidal wave and…

A: In physics, wave theory is a mathematical model that describes the behavior of waves. Waves are…

Q: 4 i + V41 Suppose i -k and u = 2i + 5j. Compute the following: %3D %3D V41 lū| = %3D ... II

A: Given: v→=441i+541ju→=2i+5j

Q: 201 Remember to put no space in between characters. If the final answer is a vhole.number, put no…

A: C3 and C4 are in series C3=2 F ; C4=2FCS=C3C4C3+C4=2×22+2=44=1 FC2 and CS are in parallel ; C2=1.5…

Q: ei(kx-wt+), e-i(kx-wt+$) = 0 True O False

A: Recall the Euler's formula:eiθ=cosθ+isinθ………(1) And,e-iθ=cos-θ+isin-θ=cosθ-isinθ………(2) Remember,…

Q: A baseball is hit at 105mph at an angle of 35 degrees to the horizontal from an initial height of 4…

A: Given Data:Speed of the baseball Angle Initial height To Determine:(a). The range the baseball will…

Q: 4TE0 2a/ ; xdy +a 1 2 4T€, 2a J-a (x² + y²)3/2 1 (x² + y?) 3/2 4TE0 xV? + a² -а

Q: Complete the truth table below for X = A.B by selecting the appropriate values for X from the…

A: Given :- Draw truth table for AND gate . X= A•B

Q: Physics problem 23.36 (please assume the dot given is the origin, and that the X-axis is horizontal…

A: The figure can be drawn as follows: Let the charges be named A, B and C and their electric field be…

Q: have to plot and write E then show how arrows are set in the graphs to the right

A: Given the value of First charge and its location q1=1 C at 0,-3 Given the value of Second charge and…

Q: Given the following matrix 3 3 1 5 Find its two eigenvectors. (A 3 and H2 0. B 3 and A, !! R -3 and…

Q: (a) How much work is done in lifting a 1.3-kg book off the floor to put it on a desk that is 0.6 m…

A: Mass of the book,m = 1.3kg Height of desk,d =0.6m Acceleration due to gravity, g = 9.8m/s2

Q: M2.2. A beam consists of two sections. Section A has a mass of 5.0 kg and a length of 3.0 m. Section…

A: Given data: The length of portion A is LA=3 m. The mass of potion A is mA=5 kg. The length of…

Q: (b) A spherical ball of charged particles has a uniform charge density throughout its volume. If the…

A: Given data, Radius of ball, R=10 (cm); According to Gauss Law, The total electric flux comes out…

Q: Let /be the line through the point with coordinates (0,1,0) in the direction of the vector 1 0 their…

A: Given, l be the line through the point with coordinates (0,1,0) in the direction of the vector…

Q: V=IR, if I is constant, what happens to V by changing R value?

A: Ohm’s law states that the potential difference across an ideal conductor is proportional to the…

Q: 6. By using the kinetic energy formulas from the first semester and using electric field knowledge…

A: A moving charge carries kinetic energy in an electric field. And that kinetic energy be defined as,

Q: Bob is a pitcher and knows that the fastest he can throw the ball is about ?0=34.1 m/s.v0=34.1 m/s.…

Q: 68. What is the cost of operating a 3.00-W electric clock for a year if the cost of electricity is…

A: Given data: Power (P) = 3.00 W Time (t) = 1 year Cost of electricity = $0.0900 per kW.h Required:…

Q: How do I determine the angles θx, θy, and θz that the force forms with the coordinate axes.

A: To find the angles θx, θy, and θz that the force makes with the coordinate axes:First, we have to…

Q: find C=A+4B if A=(3i-j+2k) and B=(i-2j+k)

A: Given: Vector A=3 i-j+2k Vector B=i-2j+k

Question

Please just D, E, and F!!!

40.12 A sample of material contains
2.00 × 1015 atoms. The sample initially
consists entirely of a radioactive sub-
stance A with a half-life of 1000 s. Atoms
of A decay into the stable material B.
(a)
What is the decay-constant of sub-
stance A (in s-)?
(b) What is the initial activity of sub-
stance A (in Bq)?
(c)
What is the initial activity of sub-
stance A (in Ci)?
The activity of the sample and the amount
of substances A and B are recorded at the
following times:
(i) 1000 s
(ii) 2000 s
(iii) 3000 s
(iv) 4000 s
Use this information to answer the fol-
lowing questions:
(d) What is the activity of the sample at
each of these times (in Ci)?
(e) What is the activity of the sample at
each of these times in terms of its
initial activity?
(f)
How many atoms of substance A are
there in the sample at each of these
times?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2: Part (f)

Step 3: Part (d)

Step 4: Part (e)

Trending now

This is a popular solution!

Step by step

Solved in 4 steps with 4 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

I really need help with this problem, can you also explain the R=2H, it's the part that confuses me the most, thanks!
Fast pls solve this question correctly in 5 min pls I will give u like for sure Aka
Problem 22.34 < 2ef 17 In a region of space there is an ectric feld that is in the direction and that has magnitude - (662N/(C-m)) Review Constant Part A Find the fux for this feld through a squarein the ay-plane at 0 and wth side length 0550 m One se of the squre i along the -s and another side along the +ys Express your answer to three signiicant fgures and include the appropriate units * . O B ? Value N.m /C Submi stAn Provide Feedback Net 14 PM 6F Mosty cleudy 0 400 144 !!
Please answer the 3 subparts A,B,C with the step of solution, because i know the tutor can answer max 3 subparts . Thank u. ( Need In 60-120 minutes )
3. Let a, b, n be integers, with n > 0. Prove that a = b (mod n) if and only if a² + b² = 2ab (mod n²).
Nilo