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The observation that energy transformations are rarely 100% efficient is seen by scientists as a violation of the Law of Conservation of Energy. true or false ???
answered
Jan 9, 2022
Physics
high-school
1
vote
119k
views
Where is your gut located in you body
answered
Nov 17, 2021
Health
middle-school
3
votes
123k
views
Ead the excerpt from The Riddle of the Rosetta Stone by James Cross Giblin. A few genuine advances in understanding the hieroglyphs were made during the 1700s. The French scholar C. J. de Guignes observed
answered
Oct 27, 2021
History
college
5
votes
175k
views
7. Which of the following is the algebraic representation for a translation 7 units left and 6 units up? A. (X +7,7-6) B. (x-7, y + 6) C. (x + 6,7 - 7) D. (X-6, y + 7)
answered
Oct 24, 2021
Mathematics
college
2
votes
74.2k
views
An unknown compound contains only C , H , and O . Combustion of 5.80 g of this compound produced 14.2 g CO 2 and 5.80 g H 2 O . What is the empirical formula of the unknown compound
answered
Sep 26, 2021
Chemistry
high-school
3
votes
80.3k
views
in 2 h, kelly laid new floor tile over 1/5 of the room. when she was joined by annette, the rest of the work was completed in 3h. how long would it have taken annette to do the entire job alone
answered
Aug 10, 2021
Mathematics
high-school
5
votes
63.1k
views
Please help on this one ❗️
answered
Jul 2, 2021
Mathematics
college
0
votes
83.0k
views
Beth recently became a vegetarian. The doctor suggested beth eats more peas and beans to ensure she gets all of the nutrients she needs. what element might the doctor be trying to give her more of
answered
Jun 22, 2021
Biology
college
6
votes
88.5k
views
How many terms are in the following: 19x - 4y - 2?
answered
Jun 16, 2021
Mathematics
college
0
votes
157k
views
A large university offers STEM (science, technology, engineering, and mathematics) internships to women in STEM majors at the university. A woman must be 20 years or older to meet the age requirement for
answered
May 26, 2021
Advanced Placement (AP)
middle-school
4
votes
66.9k
views
2. What is the main ethnic group in the Northeastern part of Iraq?
answered
May 8, 2021
Social Studies
college
6
votes
232k
views
He wants to make five of these cakes. How much of each ingredient does he need? Recipe: Makes 1 cake 3 ounces butter 4 ounces sugar 5 ounces of flour 2 eggs 1 teaspoon (tsp) baking powder
answered
Apr 9, 2021
Mathematics
college
4
votes
4.2k
views
What is the formula for surface area of a trapazoid
answered
Apr 5, 2021
Geography
middle-school
4
votes
36.4k
views
What is the freezing point of water? What is the melting point of water?
answered
Feb 6, 2021
Chemistry
middle-school
1
vote
1.0k
views
Calculate the surface area of the composite figure shown. 2 rectangular prisms. One prism has a length of 8, width of 8, and height of 2. The second prism has a length of 8, width of 2, and height of 4.
answered
Jan 28, 2021
History
middle-school
4
votes
129k
views
The weight (in pounds) for a population of school-aged children is normally distributed with a mean equal to 133 ± 25 pounds (μ ± σ). Suppose we select a sample of 100 children (n = 100) to test whether
answered
Sep 23, 2020
Mathematics
college
5
votes
85.6k
views
How large is one side of the square garden plot in meters? Two garden plots are to have the same area. One is square and one is rectangular. The rectangular plot is 4 meters wide and 16 meters long.
answered
Jul 21, 2020
Mathematics
middle-school
5
votes
40.2k
views
Which line is an example of iambic pentameter?
answered
Jul 20, 2020
English
middle-school
6
votes
188k
views
Who was given a “blank check” by Germany to deal with Serbia? Francis Joseph William II Franz Ferdinand Nicholas II
answered
May 13, 2020
History
middle-school
2
votes
30.1k
views
Help please ! !!!!!!!!!!!
answered
Mar 15, 2020
Biology
middle-school
1
vote
73.1k
views
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