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The Earth's atmosphere stops most types of electromagnetic radiation arriving from space including energy from the Sun. The EM reaching Earth's surface includes what wavelengths? A) gamma, ultraviolet,
answered
Oct 2, 2018
Physics
middle-school
0
votes
194k
views
7/2 as an improper fraction
answered
Jun 29, 2018
Mathematics
middle-school
3
votes
70.3k
views
Which of the following is a geographical limit? a.) temperature b.) soil quality c.) mountains d.) population density
answered
Apr 21, 2018
Biology
high-school
1
vote
208k
views
in the system shown below, what are the coordinates of the solution that lies in quadrant I? x^2-y^2=25, x+y=25
answered
Mar 5, 2018
Mathematics
high-school
2
votes
223k
views
What are the solutions to the following system of equations? y = x2 + 3x − 7 3x − y = −2 (3, 11) and (−3, −7) (11, 3) and (−3, −7) (3, 11) and (−7, −3) No real solutions
answered
Dec 17, 2017
Mathematics
high-school
5
votes
216k
views
How does place value help me subtract decimals?
answered
Dec 7, 2017
Mathematics
middle-school
0
votes
119k
views
There are four steps in bacterial conjugation. The second step is missing in this list .1. Special sex pilus connects two cells. 2. 3. Each cell makes a complementary DNA strand. 4. The cells separate.
answered
May 2, 2017
Biology
high-school
1
vote
71.0k
views
A fixed exchange rate is a currency system where currencies are kept constant against one another. What is a flexible exchange rate based on? a. the gold standard b. supply and demand c. the U.S. dollar
answered
Apr 24, 2017
Social Studies
high-school
3
votes
22.0k
views
You are using an electric motor that requires 40 volts to operate. The motor's circuit uses only 5 amps of direct current. How much power is being used?
answered
Sep 8, 2016
Physics
high-school
6
votes
24.9k
views
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