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A certain heat engine operates between 800 K and 300 K. (a) What is the maximum efficiency of the engine? (b) Calculate the maximum work that can be done by for each 1.0 k) of hea a reversible process
answered
May 12, 2020
Chemistry
college
4
votes
134k
views
Write an equation to match each graph: f
answered
May 5, 2020
Mathematics
middle-school
1
vote
153k
views
Which strategy can individuals employ to improve bone health? Question 17 options: Engage in cardiovascular activity daily Perform regular resistance exercise Stretch the muscles in different directions
answered
Jun 23, 2019
Health
high-school
4
votes
185k
views
if heat energy is transferred from direct contact between a warm and a cold object it has been transferred by what ?
answered
Feb 18, 2019
Physics
college
3
votes
159k
views
In the passage what about the authors word choice suggests the man is evil
answered
Feb 5, 2019
English
middle-school
2
votes
189k
views
Consider a single spin of the spinner. grey 1 white 2 grey 3 white 4 Which events are mutually exclusive? Check all that apply. landing on a shaded portion and landing on an even number landing on a shaded
answered
Jan 12, 2019
Mathematics
middle-school
2
votes
9.1k
views
underline the verbs in the sentence. past, present, or future? every night the moon will look a little different
answered
Dec 16, 2018
Social Studies
middle-school
4
votes
231k
views
What is the most basic purpose of the Constitution?
answered
Sep 12, 2018
Computers and Technology
high-school
7
votes
188k
views
They are passed down through gametes from each parent, which are created by the process known as
answered
Sep 10, 2018
Biology
high-school
5
votes
26.8k
views
Tatiana wants to give friendship bracelets to her 32 classmates. She already has 5 bracelets, and she can buy more bracelets in packages of 4.
answered
Aug 30, 2018
Mathematics
high-school
6
votes
199k
views
Prior to the beginning of World War I, which nation challenged Great Britain for supremacy of the seas? A) France B) Germany C) Russia D) Italy
answered
Jan 8, 2018
History
high-school
1
vote
228k
views
What did Mary Cassatt express in her painting Mother and Child
answered
Sep 20, 2017
Arts
middle-school
5
votes
53.7k
views
What is the melting point of mild steel?
answered
Jul 25, 2017
Chemistry
high-school
3
votes
50.0k
views
What are some physical properties of matter
answered
Apr 26, 2017
Physics
middle-school
2
votes
4.9k
views
Is it true that There were not enough medical facilities to take care of all the wounded.
answered
Feb 14, 2017
History
middle-school
1
vote
17.8k
views
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