A radioactive substance decays exponentially. A scientist begins with 130 milligrams of a radioactive substance. After 14 hours, 65 mg of the substance remains. How many milligrams will remain after 22 hours? mg Give your answer accurate to at least one decimal place.

Q: Find the amount A in an account (to the nearest dollar) after 5 years if dA = rA, A(0) = 800, and…

A: Given: dAdt=rAA0=800A10=1800

Q: scientist finds that an intial bacteria count was 45 million and 5 hours later, the count was up to…

A: Please refer to the image below

Q: The half-life of radium-226 is 1590 years. If a sample contains 200 mg, how many mg will remain…

A: The formula to find the amount of remaining radioactive material is given by the expression: An =…

Q: The weight of a bar of soap decreases by 2.5% e

A: Given: The new bar weight 100 gm.

Differential Equations

Have you ever observed the movement of the satellites and rockets or how the planets go around the sun in their orbits? How will you determine their motion? Definitely they follow some scientific laws and these kinds of problems are framed as differential equations.