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A set of pulleys is used to raise a 200 N crate 5 m. to fo this the operator applies a force of 50 N and pulls in 25 m of rope. Find the efficiency of the pulley system. A: 50% B: 62.5% C: 75% D: 80%
asked
Apr 8, 2021
Physics
high-school
1
answer
2
votes
58.5k
views
Use additive inverses and their properties to find the equivalent expressions. 6-(-3) -6+(-3) -6-(-3) OOO - 6+3 -6-3 6+(-3) 6-3 6+3
asked
Jan 18, 2021
Mathematics
college
1
answer
5
votes
35.4k
views
During filtration, anything that is small enough to pass through all three layers of the filtration membrane will become part of the filtrate. Sometimes, the least porous layer of this membrane becomes
asked
Oct 12, 2020
Biology
high-school
1
answer
0
votes
29.1k
views
What do the dates and events tell you about the relationship between the north and the south
asked
Aug 4, 2020
History
high-school
2
answers
3
votes
119k
views
A number is being written in scientific notation.The student moves the decimal point to the left 3 places
asked
Jul 16, 2020
Mathematics
high-school
1
answer
4
votes
184k
views
Among a group of 100 people, 68 can speak English, 45 can speak French, 42 can speak Spanish. 27 can speak both English and French, 25 can speak both English and Spanish, 16 can speak both French and Spanish,
asked
Apr 24, 2020
Mathematics
college
1
answer
0
votes
29.1k
views
This monetary policy __________ the economy's demand for goods and services, leading to__________ product prices. In the short run, the change in prices induces firms to produce __________ goods and services.
asked
Feb 26, 2020
Business
high-school
1
answer
1
vote
56.9k
views
Earth is a system comprised of interacting processes. Please select the best answer from the choices provided T F
asked
Aug 13, 2019
Geography
college
2
answers
1
vote
8.2k
views
Find the minimum value o f c=2x+y Subject to the following constraints X≥0 Y≥2 2x+y≤10 X-3y≥-3 Please help
asked
Mar 13, 2019
Physics
middle-school
2
answers
3
votes
57.0k
views
What was the main reason jhn D. rockafeller succed in the oil company
asked
Feb 27, 2019
History
middle-school
1
answer
0
votes
180k
views
Find the value of x. then classify the triangle in as many ways possible.
asked
Dec 22, 2018
Mathematics
middle-school
1
answer
5
votes
193k
views
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