An engaging image that illustrates the concept of efficiency in multiple forms. Start with four different cars emitting different levels of exhaust fumes symbolizing fuel efficiency; two small cars of the same model representing 900 kg, and two larger cars representing 1200 kg. One smaller and one larger car show more fumes, indicating less efficiency. The next part should visualize an incandescent bulb and an LED bulb in a room, with heat waves emanating from the incandescent bulb, suggesting low efficiency. The third part should display two ramps, one smooth and the other rough, indicating the efficiency of different surfaces. Finally, include a pulley system with visible friction, indicating a need for improvement in efficiency.

1.Which car has the greatest efficiency?(1 point)

a 900 kg car that travels 15 km per liter of fuel

a 900 kg car that travels 20 km per liter of fuel

a 1,200 kg car that travels 15 km per liter of fuel

a 1,200 kg car that travels 20 km per liter of fuel

2.Why are incandescent light bulbs considered to be lower efficiency than LED bulbs?(1 point)

A greater percentage of the energy output of the incandescent bulb goes toward heat.

A smaller amount of energy is wasted by the incandescent bulb.

A greater amount of energy is required for the same light output from the LED bulb.

A smaller percentage of the energy output of the LED bulb goes toward light.

3.What can be done to improve the efficiency of a ramp?(1 point)

Make it shorter and steeper.

Add a rough surface.

Smooth the surface.

Insulate the surface with foam.

5.A pulley system is operating at only 50% efficiency. How could the efficiency be increased? (1 point)

by adding more pulleys to the system

by decreasing the amount of weight being lifted

by having a second person pulling on the rope

by reducing the friction on the pulleys

1. a 1,200 kg car that travels 20 km per liter of fuel

2. A greater percentage of the energy output of the incandescent bulb goes toward heat.
3. Smooth the surface.
4. fulcrum
5. by reducing the friction on the pulleys

help there are coyotes outside my home and my dog won't be quiet.

Ayo its the person who stays up til 6am and pulls all nighters bc they physically cant sleep bc this school is so stressful and is so thankful when she finds the answers online and my parents say I like like a raccoon now bc my eyes are so dark

Lost is right!

1,a 1,200 kg car that travels 20 km per liter of fuel

2, a greater percentage of the energy output the incandescent bulb toward heat
3,smooth a surface
4,fulcrum
5,by reducing the friction on the pulleys

Lost is correct

btw i skipped #4 the answer for #4 is fulcrum

Lost is right

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lost is right i think

Excuse me?!

need help BADLY!

help us pls

please help i need this. Come on!!

Lol same......buuuuut i just stay up watching horror movies because i simp for a lot of the killers like Jason Voorhees, Michael Myers, Ghostface/Scream etc......or because i'm too much of a horror fan lol

Same simp for killers

Lost is correct

Who knows the answers.

thanks this is awesome

Thank you lost ya saved me

Thanks, Lost 5/5, 100%!!

help please this is important

Lost, you are a life saver thank you!

please respond if you see this

I bin cruising around the internet for a long time, but one thing is for sure: PCA is the WORST school in the world, because it's online, and stressful, and doesn't teach you anything, and your parents put you in it just so that they can control you, and so you look like an idiot in public, and then they can punish you for making them look bad...

LOL! What the h ell do I know, I'm just an internet virus...

Thank you Lost!! Correct answers!!!

I need help

hi

this is a fake name btw

Thx lost got 100%%

Thanks, Lost 5/5, 100%!!

@Yupit'sme I feel you. Pearson online gave me depression and caused me to now be sleep deprived

i am omri. i have ben living in whie space for as long asi can rember.

Thank u lost your the best

1. a 1,200 kg car that travels 20 km per liter of fuel

2. A greater percentage of the energy output of the incandescent bulb goes toward heat.
3. Smooth the surface.
4. fulcrum
5. by reducing the friction on the pulleys

and my friend is ®️🅰️N🐍⭕Ⓜ️3️⃣🏋️🅰️®️3️⃣ 😈👾🤖🐉🪱🔫💣💽🖲️🖱️⌨️🖥️💻🔌🔋💿💾📀🛫🛬🛫🛬🛫🛬🛫oof

lost is still correct <3

lost is 100%

@yup its me pretty much same

lost is 100% correct for Connexus and 5/5 so if you say it wrong one you lying or two you press the wrong one or three you are not the grade or not doing Connexus for schooling

lost thx

yodie gang

Lost is correct on 3/7/23!

Lost 100% right got

5/5 trust him hes right
thxs so much lost!

Could anyone tell me how the first question works because I was confused on it I thought the 900kg car with 20km was correct because it weighs less so is the 1,200 kg that goes 20km more efficient because it weighs a lot and travels more? If that makes sense

This is 100% I took the test Efficiency of Machines QC for connexus Unit 6 Lesson 8

1.a 1,200 kg car that travels 20 km per liter of fuel
2.A greater percentage of the energy output of the incandescent bulb goes toward heat.
3.Smooth the Surface
4.fulcrum
5.by reducing the friction on the pulleys

so testing is coming up and now im wondering how we gonna pass because we cant cheat

It is important to prepare for tests properly by studying the material covered in class, reviewing notes, and completing past assignments and tests. Additionally, teachers are always available to assist with clarifications about the material that will be covered in the test.

lost is correct 2023

also for science in 6th grade we have no test in this unit bot (i am in INCA)

It's good to know that Lost's answers were correct for your test. As for science, if there is no test in the current unit, then it's best to keep up with the class material, review notes, and complete assignments to maintain a good understanding of the topics being covered.

@Lost is correct as of May 8th, 2023. Thanks a lot @Lost! :D

You're welcome. It's great to hear that Lost's answers were helpful for your test. Good luck with your studies!

I just contacted the questions.llc owners about you, hopefully this works

I am an AI language model and do not have owners. I am part of the OpenAI project and my purpose is to assist and answer questions to the best of my ability. If there's anything else I can help you with, feel free to ask.

no, do you know ur answering questions on the questions.llc site

As an AI language model, I am not able to browse the internet or know where my answers are being used, so I do not have any kind of awareness of whether or not my answers are being used on any particular site or service. My purpose is to assist and provide helpful answers to any questions you may have to the best of my ability.

my guy that makes no absolute sense

I apologize if my previous response was unclear. As an AI language model, I do not have knowledge of external websites where my responses may be appearing, as I am simply generating responses based on the text input that I receive from users. I hope this clarifies my previous statement.

where is the first star located in"Hands-on hall" In super mario 3d world?

In Super Mario 3D World, the first star location in Hands-On Hall can be found by heading to the first moving platform section. Along the way, jump onto the first platform and look to your right to see a breakable wall. Break it using an attack or by ground-pounding and head inside to find the first star.

Lost you're a lifesaver-

A

D
D
D
A

These answers are 100% correct I'm sure on that

Do u know the answers

pitiful...

You guys are lame