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Question 8 1 pts A radioactive substance has a mean-life T of 15 years. Assume we...
1. A radioactive substance has a mean-life τ of 10 years. Assume we start with 471...
1. A radioactive substance has a mean-life τ of 10 years. Assume we start with 471 kg of the substance. How many kg of the substance will be left after 33 years? Enter a number with one digit after the decimal point.
a radioactive substance has a mean life of 20 years. assume we start with 255 kg...
a radioactive substance has a mean life of 20 years. assume we start with 255 kg of the substance. how many kg of the substance will be left at 366 years.
A radioactive substance has a half-life of 17.33 years. Use the formula n(t) = n0e^ −kt...
A radioactive substance has a half-life of 17.33 years. Use the formula n(t) = n0e^ −kt which tells you how much is left at time t > 0 to find how much of a 20-gm sample would remain one hundred years after it is collected. Round your answer to the nearest two decimal places.
a radioactive substance has a mean life of 20 years
a radioactive substance has a mean life of 20 years
need help with these two questions. Question 5 (1 point) Willmonite-35 is a newly found radioactive substance with...
need help with these two questions.
Question 5 (1 point) Willmonite-35 is a newly found radioactive substance with a half life of 450 years. How much of 14,000 grams of Willmonite-35 will be left after 180 years? Round to the nearest gram. Your Answer: Answer Question 6 (1 point) A 5.5-volt battery is connected to a series in which the inductance is 0.25 henry and the resistance is 8 ohms. Determine the current after 1 second if the initial current...
01:48:57 Question 8 - of 22 Step 1 of 1 The model for radioactive decay is...
01:48:57 Question 8 - of 22 Step 1 of 1 The model for radioactive decay is y = yoe- A radioactive substance has a half-life of 830 years. If 15 grams are present today, in how many years will 8 grams be present? (Round the value of k to 7 decimal places.) Round your answer to two decimal places, if necessary. Keypad Answer How to Enter) 5 Points years
h= half life a0 = original amount a(t) = amount present after t years t =...
h= half life
a0 = original amount
a(t) = amount present after t years
t = time
What information do you need?
TH 100 - D100 Use equation : acca un Page 4 of 5 4. Suppose we have Xo amount of a certain radioactive substance. It has been observed that this substance losses 5% of its mass every 10 years. @ How much of the initial mass Xo remains after 10 years? What about 20 years? (b) Use the...
Question 2 (1 point) A dishwasher has a mean life of 12 years with an estimated...
Question 2 (1 point) A dishwasher has a mean life of 12 years with an estimated standard deviation of 1.25 years ("Appliance life expectancy," 2013). Assume the life of a dishwasher is normally distributed. a.) True or False: The random variable x defines the life expectancy of a dishwasher b.) Find the probability that a dishwasher will last more than 15 years. c.) Find the probability that a dishwasher will last less than 8 years. d.) Find the probability that...
3. [4 pts) This question contains 3 parts. A radioactive isotope decays such that 1/8 is...
3. [4 pts) This question contains 3 parts. A radioactive isotope decays such that 1/8 is left after 8 years. What fraction of the original amount would be left after a total of 16 years? (There is no need to deduce the half-life) 01/16 (ii) 1/24 (iii) 1/32 (iv) 1/64 (v) 1/128 Describe, or show, how you arrived at this answer. If 1/8 was left after 4 years, what would be left after 16 years?
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...
need help with these two questions.
Question 5 (1 point) Willmonite-35 is a newly found radioactive substance with a half life of 450 years. How much of 14,000 grams of Willmonite-35 will be left after 180 years? Round to the nearest gram. Your Answer: Answer Question 6 (1 point) A 5.5-volt battery is connected to a series in which the inductance is 0.25 henry and the resistance is 8 ohms. Determine the current after 1 second if the initial current...
01:48:57 Question 8 - of 22 Step 1 of 1 The model for radioactive decay is y = yoe- A radioactive substance has a half-life of 830 years. If 15 grams are present today, in how many years will 8 grams be present? (Round the value of k to 7 decimal places.) Round your answer to two decimal places, if necessary. Keypad Answer How to Enter) 5 Points years
h= half life
a0 = original amount
a(t) = amount present after t years
t = time
What information do you need?
TH 100 - D100 Use equation : acca un Page 4 of 5 4. Suppose we have Xo amount of a certain radioactive substance. It has been observed that this substance losses 5% of its mass every 10 years. @ How much of the initial mass Xo remains after 10 years? What about 20 years? (b) Use the...
Question 2 (1 point) A dishwasher has a mean life of 12 years with an estimated standard deviation of 1.25 years ("Appliance life expectancy," 2013). Assume the life of a dishwasher is normally distributed. a.) True or False: The random variable x defines the life expectancy of a dishwasher b.) Find the probability that a dishwasher will last more than 15 years. c.) Find the probability that a dishwasher will last less than 8 years. d.) Find the probability that...
3. [4 pts) This question contains 3 parts. A radioactive isotope decays such that 1/8 is left after 8 years. What fraction of the original amount would be left after a total of 16 years? (There is no need to deduce the half-life) 01/16 (ii) 1/24 (iii) 1/32 (iv) 1/64 (v) 1/128 Describe, or show, how you arrived at this answer. If 1/8 was left after 4 years, what would be left after 16 years?
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...
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