Subzero

This page lists questions and answers that were posted by visitors named Subzero.

Questions

The following questions were asked by visitors named Subzero.

How do simple machines make work easier?

A person is lifting a heavy box using a lever. What is the purpose of the lever in this situation?

In which situation did the car achieve the greatest efficiency? (Assume the cars all have the same mass.) a car that traveled 80 kilometers on 5.0 liters of gas

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 5,000 machine C

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 changes the direction of the lifting force to work with gravity.*** It decreases the distance over which the force must be applied t...

A certain lever system is only 30% efficient. What could make it more efficient? Make a longer lever that will require less force. Have more than one person help to lift the lever. Use a stiffer lever to reduce energy lost bending the lever.*** Use it wit...

What is the efficiency of a ramp if 2,000 joules of energy results in 1,200 joules of work? 60%*** 24% 32% 80%

Answers

The following answers were posted by visitors named Subzero.

How can one find Q if it is not given with this same kind of problem

1. <CBX and <FBC 2. 74 3. No; corresponding 4. alternate interior 5. QPR STR; ASA 6. Scalene acute 7. 1,450 8. 180 9. 95 10. Enlargement THIS IS FOR 8TH GRADE POLYGONS AND ANGLES TEST!!

Nvm I was wrong i guess

You're welcome is 100% right

THESE ARE RIGHT :) is correct, thank you

no, it's 392 joules

decrease; direction of the force

They reduce the amount of force needed to move an object to do the same amount of work.

to reduce the force needed to lift the box and change the direction of the force.

1. mean= 23.6, median = 24, mode=25 2. 89 3.39 4. 6.5 5. 22.6

For connexus kids is right I got a 100% thank you

Taylor swift is right! not jazzy (8th grade connexus)

Happy is correct, I got a 100% Thank you!

@burger did you ever find out the answers? we have the same test