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Answers by Webtweakers

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A system absorbs 52 joules of heat and does work using 25 joules of energy. What is the change in the internal energy of the system?
answered Aug 24, 2019
4 votes
188k views
Trina has $1000 to purchase an open-top cylindrical dog pen in her backyard. She wants the height of the pen to be 5 feet. If the pen costs $1 per square foot, what is the biggest pen (in terms of the
answered Apr 28, 2019
3 votes
189k views
What occured in october 1962 that involved the potential use of nuclear weapons?
answered Apr 25, 2019
4 votes
96.2k views
A 6-ounce bottle of juice costs $.96. An 8-ounce bottle costs $1.12. Which is the better to buy?
answered Oct 8, 2018
5 votes
230k views
If you have a device that has an energy efficiency of 0.4 and you put in 100 units of energy, how many units of useful energy will you get out of it?
answered May 31, 2018
1 vote
197k views
What is the driving force behind the textile and apparel industries?
answered May 8, 2018
5 votes
209k views
You plant a tree that is 36 inches tall. After one year, the tree is 43 inches tall. Which expression describes the percent of increase in the tree's height? A: 36/43 x 100, B: 43-36/36 x 100, C: 43-36/43,
answered Mar 29, 2018
6 votes
190k views
Which of the following compounds is always part of an aqueous solution? a. water b. methanol c. bleach d. oil
answered Feb 17, 2018
1 vote
1.8k views
What is an example of the negative influence that the media can have on your health? A. You don't get enough exercise because you are watching too much television. B. Newspapers print stories about current
answered Dec 21, 2017
5 votes
194k views
∠A and ∠ B are supplementary. If m ∠A = 117°, what is the measure of ∠B?
answered Sep 27, 2017
1 vote
152k views
Necesito 5 especies de plantas acuáticas en peligro de extinción y por qué estan en peligro de extinción. Gracias
answered Jun 17, 2017
3 votes
131k views
What is the domain of the function? f(x) = (5)/(4x + 12)
answered Jun 3, 2017
3 votes
138k views
Why did Lincoln say, "I have no purpose, directly or indirectly, to interfere with the institution of slavery in the states where it exists. I believe I have no lawful right to do so, and I have no inclination
answered Dec 20, 2016
3 votes
127k views
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