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A6.1 Question HelpI If 8 g of a radioactive substance are present initially and 7 yr...
If 8g of a radioactive substance is present initially and 2yr later only 4g remain, how...
If 8g of a radioactive substance is present initially and 2yr later only 4g remain, how much of the substance will be present after 4 yr?
it says 38 grams were purchased Dcole03.10%, 12 H.S.T03 Question Hel lodine-131, a radioactive substance that is eff...
it says 38 grams were purchased
Dcole03.10%, 12 H.S.T03 Question Hel lodine-131, a radioactive substance that is effective in locafing brain tumors, has a half-ide of only eight days. A hospital purchased 38 grams of the substance but had to wat three days before it co used. How much of the substance was left after three days? The amount of substance left after three days was (Round the final answer to three decimal places as needed. Round all intermediale values...
If a substance has a half-life of 55.6 s, and if 230.0 g of the substance are present initially, how many grams will rem...
If a substance has a half-life of 55.6 s, and if 230.0 g of the substance are present initially, how many grams will remain after 10.0 minutes?
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
Question 8 of 28 > A 59.75 g sample of a substance is initially at 21.2...
Question 8 of 28 > A 59.75 g sample of a substance is initially at 21.2 °C. After absorbing 2711 J of heat, the temperature of the substance is 138.2 C. What is the specific heat (c) of the substance?
Part A) A scientist begins with 100 milligrams of a radioactive substance that decays exponentially. After...
Part A) A scientist begins with 100 milligrams of a radioactive substance that decays exponentially. After 31 hours, 50 mg of the substance remains. How many milligrams will remain after 58 hours? (Round your answer to two decimal places.) Part B) Jamal wants to save $58,000 for a down payment on a home. How much will he need to invest in an account with 8.5% APR, compounding daily, in order to reach his goal in 5 years? (Round your answer...
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...
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.
7. How much interest is included in the future value of an ordinary simple annuity of...
7. How much interest is included in the future value of an ordinary simple annuity of $1,350 paid every six months at 6% compounded semi-annually if the term of the annuity is 2 years? The interest is $ (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.) 8. Glenn has made contributions of $250 at the end of every three months into an RRSP for ten years. Interest for...
A toxic radioactive substance with a density of 8 milligrams per square centimeter is detected in...
A toxic radioactive substance with a density of 8 milligrams per square centimeter is detected in the ventilating ducts of a nuclear processing building that was used 35 years ago. The density of the radioactive substance when it was deposited 35 years ago was approximately _ mg/cm Between 2005 and 2009, the average rate of inflation was about 2.8% per year. If a cart of groceries cost $180 in 2005, what did it cost in 2009? A cart of groceries...
it says 38 grams were purchased
Dcole03.10%, 12 H.S.T03 Question Hel lodine-131, a radioactive substance that is effective in locafing brain tumors, has a half-ide of only eight days. A hospital purchased 38 grams of the substance but had to wat three days before it co used. How much of the substance was left after three days? The amount of substance left after three days was (Round the final answer to three decimal places as needed. Round all intermediale values...
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
Question 8 of 28 > A 59.75 g sample of a substance is initially at 21.2 °C. After absorbing 2711 J of heat, the temperature of the substance is 138.2 C. What is the specific heat (c) of the substance?
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...
7. How much interest is included in the future value of an ordinary simple annuity of $1,350 paid every six months at 6% compounded semi-annually if the term of the annuity is 2 years? The interest is $ (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.) 8. Glenn has made contributions of $250 at the end of every three months into an RRSP for ten years. Interest for...
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