Discover radioactive decay and the half-life equation. Learn how to use a half-life graph to write the equation for an atom's half-life and vice-versa. Related to this QuestionWhat fraction of a radioactive sample will remain after 2.5 ...
Question: The half-life of a radioactive substance is 20 days. Let Q(t) denote the quantity of the substance left after t days.(a) Write a differential equation for Q(t).Q'(t)=◻(b) Find the time required for a gi...
1.Thehalf-life of a certain radioactive substance is 2.5 sec.The initial amount ofsubstance is S。grams.a. Express the amount ofsubstance S remaining as a function of timet.b. How much of the substance isleft after 2.5 sec? after 7.5 sec?c. Determine S。if there was 1 g left after...
Step by step video & image solution for A radioactive substance is subject to the law of natural decay (dv)/(dt)=-kv, where v is the volume of the substance at time t and k is a positive constant. The half-life of the substance is the time it takes for half the substance to di...
由于人们过度地采伐森林,空气、海洋、湖泊、河流、沼泽受到各种化合物的污染,汽车排放的尾气中二氧化碳含量过高致使全球变暖,氯氟烃致使臭氧层出现空洞,世界人口剧增以及其他诸多缘故,全球环境恶化,其严重程度已经危及到包括人类在内的一切生物的生存。The following is a list of current environmental issues: ...
(1)The half-life of cesium-137 is 30 years. Suppose we have a 10-g sample. ①Find a function that models the mass remaining after t years. ②How much of the sample will remain after 80 years? ③After how long will only 2 g of the sample remain?
into my garden come into space to travel into the centre of th into the dreamtime into the entry into the groove into the high mountai into the misty mounta into the patrol car into the radio into the regulars into the unknown into the washing mach into their dreams sti into this probl...
The term half-life is appropriate due to the exponential and quantum nature of radioactive decay, which makes it impossible to predict exactly when a single atom of radioactive material will disintegrate. The half-life measurement instead relates to statistics, representing the time it takes for ...
a graphical material a grasshopper at the a great -granddaughte a great chance a great cook a great crowd a great distance off a great man is always a great man once said a great number of peo a great trend of cere a green radioactive m a green wound is soon a group with one eye...
Radioactive material may enter the body by inhalation, ingestion, or through a break in the skin. Early diagnosis depends to some extent upon an environmental analysis but more directly upon measurements of the radiation from the deposits within the body or in excretions from the body. The ...