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Why don't x-rays, gamma rays, and most UV rays reach Earth's surface? The atmosphere blocks or absorbs them. They don't have enough energy to travel that far. The wavelengths are too short to reach Earth.
answered
Dec 12, 2018
Chemistry
middle-school
4
votes
42.7k
views
Write the function f(x)equals=x squared minus 13 xx2−13x in the form f left parenthesis x right parenthesis equals a left parenthesis x minus h right parenthesis squared plus kf(x)=a(x−h)2+k. identify
answered
Sep 10, 2018
Mathematics
college
4
votes
57.9k
views
When a positively charged object moves in the same direction as the electric field, the electric potential energy of the object? 1.becomes zero 2.increases 3.decreases 4.stays the same
answered
Jul 15, 2018
Biology
middle-school
4
votes
98.9k
views
Vinegar (C2H4O2) and baking soda (NaHCO3) react to form sodium acetate, water, and carbon dioxide. C2H4O2 + NaHCO3 ? How many total carbon atoms are expected in these products? A. 1 B. 2 C. 3 D. 4
answered
Jul 2, 2018
Chemistry
high-school
3
votes
187k
views
Question 3 (Multiple Choice Worth 5 points) (04.06 MC) Malia is using an online calculator to calculate the outputs f(n) for different inputs n. The ordered pairs below show Malia's inputs and the corresponding
answered
Mar 11, 2018
Mathematics
high-school
5
votes
211k
views
Reduce the fraction to lowest terms y+5/2y+10
answered
Feb 24, 2018
Mathematics
middle-school
3
votes
110k
views
As little as _______ percent of privately owned 4es ever move from the start-up stage to the success stage. a. 15 b. 6 c. 2 d. 10
answered
Oct 5, 2017
Business
high-school
5
votes
191k
views
Is 20 hundredth equivalent to 2 thousandths
answered
May 20, 2017
Mathematics
middle-school
2
votes
215k
views
Which word is the subject of the sentence? Did they say anything about going to the beach? A. anything B. beach C. say D. they
answered
Nov 10, 2016
English
high-school
1
vote
36.4k
views
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