How much will a dial be dimmed in a watch that is 50 years

Assignment Help Chemistry

Reference no: EM131117141

Some watch dials are coated with a phosphor, like ZnS, and a polymer in which some of the 1H atoms have been replaced by 3H atoms, tritium. The phosphor emits light when struck by the beta particle from the tritium decay, causing the dials to glow in the dark. The half-life of tritium is 12.3 yr. If the light given off is assumed to be directly proportional to the amount of tritium, by how much will a dial be dimmed in a watch that is 50 years old?

Reference no: EM131117141

Questions Cloud

Do you think is legitimate use of law enforcement resources : Create a 10 slide PowerPoint presentation on responding to an incident. Explain the steps as if you were explaining it to a group of people.

Concepts outlined in the case discussion questions : Analysis should be guided by the questions in the case study and should be appropriately answered within your report analysis. You must support your discussion with relevant theories from textbooks.

Disclosures required in various situations ace inc : Recently Ace interrupted its policy of paying cash dividends quarterly to its stockholders.

Question regarding the changes in jet fuel prices : An airline knows it will need to buy 100 million barrels of jet fuel 6 months from now. Of course, if the price of jet fuel increases, the airline will be in trouble. Suppose that put and call options on jet fuel are available for purchase. True o..

How much will a dial be dimmed in a watch that is 50 years : If the light given off is assumed to be directly proportional to the amount of tritium, by how much will a dial be dimmed in a watch that is 50 years old?

How personal learning and development may benefit : Evaluate how personal learning and development may benefit others and by the way its health and social care level 3

Output rate for the henderson family : The Henderson family and the Clark family each used their sprinklers last summer. The water output rate for the Henderson family's sprinkler was 30L per hour. The water output rate for the Clark family's sprinkler was 35L per hour.

How can government restrictions affect international payment : How can government restrictions affect international payments among countries?

Write two ordered pairs to represent sales : a) Write two ordered pairs to represent the sales on the days described. b) Find the slope of the line through those ordered pairs c) Write an equation in point-slope form of the line.

User Account

All Pages