Watch dials are often painted with a compound containing tritium, which has a half-life of 12.3 years. when the tritium atom undergoes beta decay the emitted electron strikes a fluorescent pigment, which then glows. if your tritium-dial watch is giving off a certain amount of light, how many half-lives must pass until the watch gives off only one-eighth as much light?
Answers: 2
Physics, 22.06.2019 17:00
Explain what will happen if decomposers were apsent from a forest ecoysystem.
Answers: 1
Physics, 23.06.2019 00:10
Consider a small frictionless puck perched at the top of a fixed sphere of radius r. if the puck is given a tiny nudge so that it begins to slide down, through what vertical height will it descend before it leaves the surface of the sphere? [hint: use conservation of energy to find the puck's speed as a func e conservation of energy to find the puck's speed as a function of its height at what value of this normal force does the puck leave the sphere? ] here on the puck.
Answers: 2
Physics, 23.06.2019 01:00
Two positive charges are equal. which has more electric potential energy?
Answers: 1
Physics, 23.06.2019 12:00
Calculate the speed of segment c. (science question)1.7 m/s .4 m/s*****.6 m/s 2.3 m/s
Answers: 1
Watch dials are often painted with a compound containing tritium, which has a half-life of 12.3 year...
Mathematics, 09.04.2020 15:35
SAT, 09.04.2020 15:36
Mathematics, 09.04.2020 15:36
Mathematics, 09.04.2020 15:36
French, 09.04.2020 15:36
Mathematics, 09.04.2020 15:36
Mathematics, 09.04.2020 15:37