Homework Answers
Add Answer to:
The half-life of 60 Co is 5.27 years. The activity of an 6° Co sample is...
An unknown radioactive substance has a half-life of 3.20 hours. If 39.6 g of the substance...
An unknown radioactive substance has a half-life of 3.20 hours. If 39.6 g of the substance is currently present, what mass Ao was present 8.00 hours ago? Express your answer with the appropriate units. View Available Hint(s) ? OP HÅR A9 = Value O 2 Units Submit Part C Americium-241 is used in some smoke detectors. It is an alpha emitter with a half-life of 432 years. How long will it take in years for 34.0 % of an Am-241...
Cobalt-60 is radioactive and has a half life of 5.26 years. Calculate the activity of a...
Cobalt-60 is radioactive and has a half life of 5.26 years. Calculate the activity of a 4.5 mg sample of cobalt-60. Give your answer in becquerels and in curies. Round your answer to 2 significant digits. Bq ? Ci
Cesium-137, used in cancer treatment, has a half- life of 30 years. are here 1974 used...
Cesium-137, used in cancer treatment, has a half- life of 30 years. are here 1974 used in cancer treatment, has a half- Part A Enter the balanced nuclear equation for the beta decay (e) of cesium-137 Express your answer as a nuclear equation. Α. ΑΣφ on? Subrnit Previous Answers Request Answer Part B How many milligrams of a 24 mg sample of cesium-137 remain after 120 years? Express the mass to two significant figures and include the appropriate units. Value...
What is the activity of the sample in Bq? Cobalt-60, which undergoes beta decay, has a...
What is the activity of the sample in Bq?
Cobalt-60, which undergoes beta decay, has a half- life of 5.26 yr. N = 3.14x1013 B-particles SU Previous Answers All attempts used; correct answer displayed Part B What is the activity of the sample in Bq? t V AC o XD x x x XI .X.10 > . Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining
6. The half-life for the day of carbon-14 is 5.73x10 years. Suppose the activity due to...
6. The half-life for the day of carbon-14 is 5.73x10 years. Suppose the activity due to the radioactive decay of the carbon-14 in a tiny sample of an artifact made of wood from an archeological dig is measured to be 1.9x103 Bq. The acitivity in a similar- sized sample of fresh wood is measured to be 7.8x103 Bq. Calculate the age of the artifact. Round your answer to 2 significant digits. rate kN kIn 2 (ICi-3.7x1010 Bq) 1/2
A 170 g mass attached to a horizontal spring oscillates at a frequency of 3.10 Hx....
A 170 g mass attached to a horizontal spring oscillates at a frequency of 3.10 Hx. Att=0s, the mass is at 6.00 cm and has , - 42.0 cm/s. Determine: The maximum speed Express your answer to three significant nd include of op units. OP OO Value Units Submit Request Answer Part F The maximum acceleration. Express your answer to three significant figures and include the appropriate units. ? MAO Value Units Submit Request Answer Part G The total energy...
Living matter has a carbon-14 activity of about 24.0 counts/min per gram of carbon. What is...
Living matter has a carbon-14 activity of about 24.0 counts/min per gram of carbon. What is the age of an artifact for which the carbon-14 activity is 3.00 counts/min per gram of carbon? The half-life of carbon-14 is 5730 years. Express your answer with the appropriate units. I MÅ R O 2 ? Age = yr Age = 34380 Submit Submit Previous Answers Request Answer
Radioactive Decay - Half-life and Activity 1 Radioactive decay - Half-life Time 0 1000 21 31...
Radioactive Decay - Half-life and Activity 1 Radioactive decay - Half-life Time 0 1000 21 31 750 N 1.000.000 500,000 250,000 125,000 62,500 31.250 15.625 7813 3.506 1.953 977 51 6 500 7 BI . 101 250 125 0 tie 21.234.41516171819, 1012 Time in multiples of A radioactive sample's half-life is 30.2 years. 1 year = 365 days, 1 day = 24 hours, 1 hour - 60 minutes, 1 minute = 60 seconds (a) Find its decay constant in year...
The half life for the decay of carbon-14 is 5.73 x 10 years. Suppose the activity...
The half life for the decay of carbon-14 is 5.73 x 10 years. Suppose the activity due to the radioactive decay of the carbon-14 in a tiny sample of an artifact made of wood from an archeological dig is measured to be 19. Bq. The activity in a similar-sized sample of fresh wood is measured to be 20. Bq. Calculate the age of the artifact. Round your answer to 2 significant digits. years X 5 ?
The half-life of 52Mn is 5.59 days. (a) Convert the half-life to units of seconds. (b)...
The half-life of 52Mn is 5.59 days. (a) Convert the half-life to units of seconds. (b) What is the decay constant (in s−1) for this isotope? (c) Suppose a sample of 52Mn has an activity of 0.510 µCi. What is this activity expressed in the SI unit of becquerels (Bq)? (d) How many 52Mn nuclei are needed in the sample in part (c) to have the activity of 0.510 µCi? E. Now suppose that a new sample of 52Mn has...
An unknown radioactive substance has a half-life of 3.20 hours. If 39.6 g of the substance is currently present, what mass Ao was present 8.00 hours ago? Express your answer with the appropriate units. View Available Hint(s) ? OP HÅR A9 = Value O 2 Units Submit Part C Americium-241 is used in some smoke detectors. It is an alpha emitter with a half-life of 432 years. How long will it take in years for 34.0 % of an Am-241...
Cobalt-60 is radioactive and has a half life of 5.26 years. Calculate the activity of a 4.5 mg sample of cobalt-60. Give your answer in becquerels and in curies. Round your answer to 2 significant digits. Bq ? Ci
Cesium-137, used in cancer treatment, has a half- life of 30 years. are here 1974 used in cancer treatment, has a half- Part A Enter the balanced nuclear equation for the beta decay (e) of cesium-137 Express your answer as a nuclear equation. Α. ΑΣφ on? Subrnit Previous Answers Request Answer Part B How many milligrams of a 24 mg sample of cesium-137 remain after 120 years? Express the mass to two significant figures and include the appropriate units. Value...
What is the activity of the sample in Bq?
Cobalt-60, which undergoes beta decay, has a half- life of 5.26 yr. N = 3.14x1013 B-particles SU Previous Answers All attempts used; correct answer displayed Part B What is the activity of the sample in Bq? t V AC o XD x x x XI .X.10 > . Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining
6. The half-life for the day of carbon-14 is 5.73x10 years. Suppose the activity due to the radioactive decay of the carbon-14 in a tiny sample of an artifact made of wood from an archeological dig is measured to be 1.9x103 Bq. The acitivity in a similar- sized sample of fresh wood is measured to be 7.8x103 Bq. Calculate the age of the artifact. Round your answer to 2 significant digits. rate kN kIn 2 (ICi-3.7x1010 Bq) 1/2
A 170 g mass attached to a horizontal spring oscillates at a frequency of 3.10 Hx. Att=0s, the mass is at 6.00 cm and has , - 42.0 cm/s. Determine: The maximum speed Express your answer to three significant nd include of op units. OP OO Value Units Submit Request Answer Part F The maximum acceleration. Express your answer to three significant figures and include the appropriate units. ? MAO Value Units Submit Request Answer Part G The total energy...
Living matter has a carbon-14 activity of about 24.0 counts/min per gram of carbon. What is the age of an artifact for which the carbon-14 activity is 3.00 counts/min per gram of carbon? The half-life of carbon-14 is 5730 years. Express your answer with the appropriate units. I MÅ R O 2 ? Age = yr Age = 34380 Submit Submit Previous Answers Request Answer
Radioactive Decay - Half-life and Activity 1 Radioactive decay - Half-life Time 0 1000 21 31 750 N 1.000.000 500,000 250,000 125,000 62,500 31.250 15.625 7813 3.506 1.953 977 51 6 500 7 BI . 101 250 125 0 tie 21.234.41516171819, 1012 Time in multiples of A radioactive sample's half-life is 30.2 years. 1 year = 365 days, 1 day = 24 hours, 1 hour - 60 minutes, 1 minute = 60 seconds (a) Find its decay constant in year...
The half life for the decay of carbon-14 is 5.73 x 10 years. Suppose the activity due to the radioactive decay of the carbon-14 in a tiny sample of an artifact made of wood from an archeological dig is measured to be 19. Bq. The activity in a similar-sized sample of fresh wood is measured to be 20. Bq. Calculate the age of the artifact. Round your answer to 2 significant digits. years X 5 ?
Most questions answered within 3 hours.
-
To decide your fate, you will play a board game on a simple
board: a linear...
asked 1 hour ago -
1. What are specialty engines? ( )
a. Logical Processors that perform specialized functions
b. An...
asked 2 hours ago -
a. What double precision floating point
number is represented by the following 64-bit binary? Show your...
asked 2 hours ago -
Indicate whether the statement is true or false
(1-20).
1)A good time management plan will eliminate...
asked 3 hours ago -
Which one of the following will occur when the internal rate of
return equals the required...
asked 4 hours ago -
The mean value of land and buildings per acre from a sample of
farms is $1800,...
asked 4 hours ago -
The Hotel Conneautis considering 3 the
following capital budgeting projects
The Hotel Conneaut has internal funind for...
asked 4 hours ago -
Which of the following is NOT a product of the first step in the
p-p chain...
asked 4 hours ago -
The chance that UPS will deliver a package to a customer within
X days is normally...
asked 4 hours ago -
3Cu(NO3)2(aq) + 2Al(s) ---> 3Cu(s) + 2Al(NO3)3(aq) if you
have 32 moles of aluminum, what is...
asked 4 hours ago -
Four 100 micro Farads capacitors are connected in parallel, the
equivalent capacitance of these four capacitors...
asked 4 hours ago -
What is the pH of a 3% solution of atropine sulfate knowing that
the molecular weight...
asked 4 hours ago