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Answers by Rotman

Answers by Rotman
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An electric heater takes 1.2kwh in 30min at 120V having an efficiency of 99%.The heat energy required boil a certain amount of water is 99KJ.If the current taken by heater is 20 amp at 120V.Find the time
answered Jul 18, 2021
3 votes
234k views
The German word that refers to something in which the whole seems greater than the sum of its parts is ________.
answered Jun 22, 2021
1 vote
48.6k views
Select the correct answer. Which of the following is a secondary source?
answered Jun 9, 2021
4 votes
180k views
Thirty beats are heard in one minute when two notes are played together. If the higher note has a frequency of 740 Hz, what is the frequency of the lower note
answered Apr 16, 2021
2 votes
34.0k views
Which author's stories are often associated with magical realism? A. Gabriel García Márquez B. Franz Roh C. Jane Austen D. Henri Rousseau SUBMIT
answered Apr 8, 2021
4 votes
43.0k views
Oil with a surface tension of 0.01 N/m is trapped in a bed of material with permeability of 1x10^-10 m^2 and a length of 150 m. We want to push the oil out of the bed by pumping in an extraction fluid
answered Mar 30, 2021
2 votes
219k views
(40 Points) Construct a personal letter to a friend. The letter should also be free of grammar and spelling errors. The address may be fictionalized.
answered Nov 5, 2020
3 votes
114k views
According to the article Educators Reach Out to Katrina Victims what should educators and school personnel do to assist school-aged children after national disaster a- develop a new sense of normalcy in
answered Sep 7, 2020
3 votes
96.2k views
How did growth in the west affect Native American groups?
answered Aug 30, 2020
3 votes
63.9k views
A surveyor starts at the southeast corner of a lot and charts the following displacements: A = 600 m, N; B = 400 m, W; C = 200 m, S; and D = 100 m, E. What is the net displacement from the starting point?
answered Jul 7, 2020
3 votes
22.0k views
The product of a number and 2/3 is 9/10. What is the number?
answered Apr 27, 2020
2 votes
195k views
Whar steps do you do for finding what the percent of 80 is 10?
answered Feb 10, 2020
2 votes
235k views
can anyone explain to me how to balance a chemical equation? im having trouble in understanding how i keep getting it wrong.
answered Aug 10, 2019
5 votes
235k views
During the scientific revolution, Nicolaus Copernicus and Galileo Galilei made important discoveries in the field of astronomy. Robert Boyle and Isaac Newton discovered many of the basic laws of physics
answered Jan 29, 2019
3 votes
88.7k views
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