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You are trying to determine the half-life of a new radioactive element you have isolated. You start with 1 gram, and 3 days later you determine that it has decayed down to 0.6 grams. What is its half-life?
answered
Dec 21, 2018
Mathematics
college
4
votes
22.5k
views
Which modifier correctly completes the sentence? it's always a __________ day when you're fishing on the lake. a. good b. well?
answered
Aug 22, 2018
English
high-school
5
votes
73.6k
views
A fish is 5 feet below the surface of a lake. If its position can be recorded as −5 feet, what would the position of 0 represent? the distance above the surface of the lake the distance below the surface
answered
Jun 8, 2018
Mathematics
middle-school
7
votes
211k
views
Which object represents a simple machine? A)battery B)pliers C)Match D)candle
answered
Feb 28, 2018
Chemistry
middle-school
6
votes
105k
views
I need help answering this algebra problem: 63-7[18-3(15÷5)]
answered
Feb 12, 2018
Mathematics
college
4
votes
158k
views
In "The Minster's Black Veil," after permanently adopting his black veil, Mr. Hooper
answered
Dec 25, 2017
English
high-school
2
votes
157k
views
How did the standardization of the English language in the eighteenth century benefit publishers?
answered
Jul 22, 2016
English
high-school
0
votes
46.0k
views
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