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Subzero
Questions (8)
What is the efficiency of a ramp if 2,000 joules of energy results in 1,200 joules of work?
60%*** 24% 32% 80%
4 answers
968 views
A certain lever system is only 30% efficient. What could make it more efficient?
Make a longer lever that will require less
4 answers
1,501 views
How does a pulley make work easier when it is used to lift an object?
It reduces the weight of the object being lifted. It
4 answers
1,099 views
Which machine has the highest efficiency?
machine/ output work (j)/ input work (j) A 750 1,500 B 1,000 4,000 C 450 600 D 3,000
4 answers
983 views
In which situation did the car achieve the greatest efficiency? (Assume the cars all have the same mass.)
a car that traveled 80
3 answers
993 views
Where is the fulcrum in this situation?
(guy lifting a rock with a bar) It is the point where the bar touches the smaller rock.
4 answers
824 views
A person is lifting a heavy box using a lever. What is the purpose of the lever in this situation?
4 answers
1,218 views
How do simple machines make work easier?
1 answer
528 views
Answers (15)
@burger did you ever find out the answers? we have the same test
Happy is correct, I got a 100% Thank you!
Taylor swift is right! not jazzy (8th grade connexus)
For connexus kids is right I got a 100% thank you
1. mean= 23.6, median = 24, mode=25 2. 89 3.39 4. 6.5 5. 22.6
to reduce the force needed to lift the box and change the direction of the force.
They reduce the amount of force needed to move an object to do the same amount of work.
decrease; direction of the force
1,600 joules
no, it's 392 joules
THESE ARE RIGHT :) is correct, thank you
You're welcome is 100% right
Nvm I was wrong i guess
1.
How can one find Q if it is not given with this same kind of problem