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Bismuth 210 has half life of 5 days and a sample originally has a mass of 800mg What is the formula for mass remaining after t days?

The mass can be determined with the formula m=800(.5)^(t/5)


What is 1760 x 5 equals?

You can type basic maths equations into google search and it shows you the answer just above any search results! 60x5 =300 700x5=3500 5000+3500+300=8000+800=8800


How can clculate return duct size?

There are going to be allot of varying opinions on this one but it's fairly simple to get in a good ball park. You want between 600 to 800 feet per minute of air flow so you need to know the CFM of your air handler and then you can calculate it this way. Ftcube /min divide by Ft / Min = Ft square. At 1200 CFM for a flow rate of 800 Ft/min you get a result of 1.5 square feet which is 216 square inches. If you divide by 8 for the prefab 8 inch duct you need a 27 inch wide dimension or 16 X 13.5. Good luck on your project.


A commuter railway has 800 passengers a day and charges each one 2 dollars. For each 10 cents the fair is increased 10 fewer people will ride the train. What is the max income you get from the train?

2500 dollars. This is reached with 500 passengers and fare of 5 dollars.


How much would 50000.00 be worth in 1965?

To determine how much $50,000 in 1965 would be worth today, we can use the inflation rate as a reference. The cumulative inflation rate from 1965 to 2023 is approximately 800%. This means that $50,000 in 1965 would be equivalent to around $450,000 today, reflecting the significant increase in prices over the decades. However, the exact amount can vary based on the specific inflation calculator used.