which of the following is a compound machine?

a. bicycle

b. ramp

c. screw

d. knife

Answers

Answer 1
Fortnite car obviously
Answer 2

Answer: I think it is a bicycle

Explanation: A bicycle has many parts


Related Questions

briefly explain why the number of electrons circling the nucleus determines the physical and chemical properties of the Atom

Answers

Answer:

Electrons are negatively charged particles that orbits the nucleus

Explanation:

Chemical and physical properties of elements are usually determined by the number of electrons they posses. When atoms combine, they do so in order to attain stability.

An element has a metallic-gray appearance. It also has the properties of both a metal and a nonmetal. In which section of the table would you find this element?

Select one:

3

4

1

2

Answers

Answer:

you would find it in section 3 as these are semi-metals

Explanation:

Answer:

The answer is where the metalloids are located

Explanation:

What periodic element is from Europe

Answers

Answer:

Europium

Explanation:

Europium

Europium was isolated in 1901 and is named after the continent of Europe.

Europium - Wikipediaen.wikipedia.org › wiki › Europium

I think it would be Europium

Which energy source is not available during rain or a particularly cloudy day?
solar
wind
water
biomass
or geothermal?

Answers

The anwser is biomass
bio mass is the answer

Which ecosystem is the most diverse ecosystem?

Group of answer choices

Artic

Tundra

Marine

Rain Forest

Answers

Answer:

Rain forest

Explanation:

The rainforest has a very diverse animal kingdom

help me please with the connect it :,)

Answers

1. Potential

2. Potential

3. Potential

4. Kinetic

5. Kinetic (not sure)

6. Potential

7. KInetic

8. Potential

9. Kinetic

10. KInetic

11. Potential

12. Potential

How many atoms of Pb are there?

Answers

Answer: i believe it is

602,000,000,000,000,000,000,000 atoms

Explanation:

6.02×1023 atoms/mole

PLZ HELP
Explain why higher temperature in a substance does not mean the substance has more thermal energy?

Answers

Answer:

Temperature is the average kinetic energy of particles of an object. Warmer objects have faster particles and higher temperatures.

Explanation:

If two objects have the same mass, the object with the higher temperature has greater thermal energy. Temperature is measured with a thermometer.

Find the slope of the line that passes through the points (2, 11) and (8, 14).

Answers

The slope is m=1/2 you subtract 14-11 and 8-2 which gives you 3/6 which simplied is 1/2

Answer: The slope is M=1/2 you subtract 14-11 and subtract 8-2 which gives you 3/6 and the last answer becomes  1/2

Explanation:

HELP DUE TODAYYYYYYYYYYYYYYYY

Answers

what he did wrong was he put the plant in the closet, plants need sun
Plant in the closet is bad for the plant as what spongebob did. It need energy from the sun. The plant needs to be outside.

Avanti works in a bookstore. She has four books and is going to place them in two stacks.
Speak Fast !!!The diagram above shows the books before they touch. Use the information in the diagram to answer the question.

How did the temperatures of the four books compare before they touched? How will the temperatures of the two top books compare after the books have been touching for a while, and why?

Answers

Answer:

um where's the diagram

Explanation:

I need it to help with the question

Write the balanced chemical equation for the reaction shown.


Carbon is represented by a black sphere, nitrogen by a blue sphere, chlorine by a green sphere, and hydrogen by a white sphere. In the reactants there are three molecules that contain one black sphere and four white spheres. There are three molecules that contain two blue spheres and four green spheres. In the products there are three molecules that contain one black sphere and four green spheres. There are three molecules that contain two blue spheres. There are six molecules that contain two white spheres.

Answers

Answer:

3CH₄ + 3N₂Cl₄ → 3CCl₄ + 3N₂ + 6H₂

Explanation:

    Carbon_black sphere

    Nitrogen_blue sphere

    Chlorine_green sphere

    Hydrogen_white sphere

Reactants:

Three molecules that contain one black sphere and four white spheres

3CH₄          

Three molecules that contain two blue spheres and four green spheres:

3N₂Cl₄

Products:

Three molecules that contain one black sphere and four green spheres:

3CCl₄

Three molecules that contain two blue spheres:

3N₂

Six molecules that contain two white spheres

6H₂

The reaction proper:

3CH₄ + 3N₂Cl₄ → 3CCl₄ + 3N₂ + 6H₂

Sidenote: I hope this answer helps!

HELP PLS PLEASSEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

Answers

Okay.. so I guess this is how it goes:

1. Rainforest
2. Temperate deciduous
3. Marine
4. Taiga
5. Tundra

Pls don't completely rely on it, this is my best guess and it's probably right except with Marine life and temperature deciduous. 70% I feel like it would temperate then marine. But check with urself again. Hope this helped..

Match each type of chemical bond with its properties. Drag the items

rect location on the right.

covalent bond

crystalline

metallic bond

ductile

ionic bond

poor thermal conductivity

molecular compounds

hard and brittle

electron sea model

Answers

Answer[tex]__________ is a set of _____ or combination of __________ alleles responsible for an _________ of a trait.[/tex]:

Explanation:

The bonds are formed by the valence electron of the atom. The covalent bonds show poor thermal conductivity and are hard and brittle substances. Thus, options 1. c and e, 2. b and f, 3. a and d are correct.

What are chemical bonds?

Chemical bonds are the linkages formed between the atoms of the same or different element by transfer, sharing, and moving electrons of the valence shell of the orbital.

The covalent bonds are formed by sharing the valence electron with the atoms that look hard and brittle and are poor thermal conductors. Thus, options c and e are correct.

The metallic bonds, on the other hand, are formed by the free movement of the electrons in the structures that are ductile and are represented by the electron sea model. Thus, options b and f are correct.

Lastly, the ionic bonds are created by the transfer of the valence electron from one to another atom. They form crystalline structures and molecular compounds with cations and anions in them. Thus, options a and d are correct.

Learn more about chemical bonds, here:

https://brainly.com/question/7173348

#SPJ2

what type of atmospheric conditions does weather describes

Answers

Answer:

humidity, air temperature and pressure, wind speed and direction, cloud cover and type, and the amount and form of precipitation,

Match the term with its definition

Cytoplasm

Electron transport chain

Fermentation

Pyruvate


An organic molecule that occurs as an intermediate in many metabolic processes

The chemical breakdown of a substance

A process in which electrons are transferred from one compound to another with a release of energy occurring in the production of ATP

The gel-like material within a living cell

Answers

cytoplasm - the gel-like material within a living cell

electron transport chain - a process in which electrons are transferred…

fermentation - the chemical breakdown of a substance

pyruvate - and organic molecule that occurs…
cytoplasm is the jelly like substance inside a cell, it’s mainly known for being the place chemical reactions happen

__________ is an organism’s __________ or physical traits which is _________ by __________. Example: _______ _______, detached earlobes
PLSSS ANSWER ASAP I BEG PLAEASEEE

Answers

Answer:

.

Explanation:

How long does it take for the entire pattern of moon phases to be completed?
A. it takes about a week
B. it takes about a month
C.it takes about a year
D.it takes a different amount of time each time the pattern

Answers

B. It takes about a month
The answer could be B

PS: Sorry if I’m wrong

A prospector pans for gold in a stream.

Which term best describes what is in his pan when he scoops up part of the stream bed?

mixture

pure substance

compound

element

Answers

Answer:

Mixture

Explanation:

When a prospector scoops up part of the stream bed, the pan contains stream sediments.

The term that best describes what is in his pan when he scoops up part of the stream bed is the mixture. Thus, the correct option for this question is A.

What is a Stream bed?

A stream bed may be defined as the strait extremity of a stream or river through which the physical confine of the normal water flow. It is a type of channel significantly occupied by a stream.

According to the context of this question, when a prospector scoops up part of the stream bed, the pan contains stream sediments, which implies that the mixture contains stream sediments or contamination.

Therefore, the mixture is the term that best describes what is in his pan when he scoops up part of the stream bed. Thus, the correct option for this question is A.

To learn more about Stream bed, refer to the link:

https://brainly.com/question/17751093

#SPJ2

An _______ is one form of a _______ where one received from each parent. Alleles are represented by ________.
PLSS ANSWER ASAP PLEASE.!!!!

Answers

Answer:

aren't there words??????

an ALLELE is one form of a GENE

please use a t least 2 of the words please! thank you

Answers

Answer:

model  atoms

Explanation:

Answer:

Property product

At the atomic level, are synthetic medicines different from natural medicines? Explain your answer.

Answers

Answer:

Although herbal medicines are less potent in comparison to synthetic drugs in some cases but still these are consider less toxic or having less side effect in contrast to synthetic drugs. The ultimate norm for any medicine (human made or natural) is their non-toxicity, effectiveness, specificity, stability and potency.

(It's on quizlet btw)

Answer:

Although herbal medicines are less potent in comparison to synthetic drugs in some cases but still these are consider less toxic or having less side effect in contrast to synthetic drugs. The ultimate norm for any medicine (human made or natural) is their non-toxicity, effectiveness, specificity, stability and potency.

Explanation:

help please
Determine whether each action will increase or reduce soil erosion.
cattle grazing
contour plowing
deforestation
hydroseeding
planting vegetation
sort into the catigories
Increse soil erosion or reduse soil erosion

Answers

Increase soil erosion:
• Cattle grazing
• Deforestation
• planting vegetation

Reduce Soil Erosion:
• Contour Plowing
• hydro seeding
—————————————
Hope this helps!

Answer:a

Explanation:

Please answer with an actual answer and not just put a random word ^-^

Materials

large ball about the size of a basketball
small ball about the size of a tennis ball
strong light of about 100 watts or more
dark room

Directions

Place the large ball about 12 feet from the light source. Then place the small ball in the shadow of the large ball. Observe the shadow pattern.
Place the large ball in the shadow of the small ball. Observe the shadow pattern.

Questions

Which eclipse was modeled when the large ball was between the small ball and the light?
Which eclipse was modeled when the small ball was between the large ball and the light?
What does the large ball represent?
What does the small ball represent?
What does the light source represent?
Draw a picture showing a lunar eclipse.
Draw a picture showing a solar eclipse.

Upload your answers to the experiment questions and your drawings of a lunar and solar eclipse. Be sure to answer every question and use complete sentences.

Answers

Which eclipse was modeled when the large ball was between the small ball and the light?

The model is a "Lunar Eclipse" (If it was talking about the earth, then yes, it is a lunar eclipse).

                                                             

Which eclipse was modeled when the small ball was between the large ball and the light?

The model is a "Solar Eclipse".

                                                             

What does the large ball represent?

The earth.

                                                             

What does the small ball represent?

The moon.

                                                             

What does the light source represent?

The sun.

Hope this helps!~ <3

(I can't draw so sorry.)

Kiley wants to balance the equation H2 + N2 → NH3. Which would be her first step in balancing an equation?

Answers

Answer: The balanced equation will be

6H2 + N2 → 2NH3

Explanation:

First step is to balance nitrogen

ie, H2 + N2 → 2NH3

Second step is to balance hydrogen accordingly

ie, 6H2 + N2 → 2NH3

This is the perfect balanced equation.

Answer:

c

Explanation:

c

Hi!!!
Please explain what the Law of Conservation Of Mass is with the following terms:
Chemical Reaction, Reactant, Product, Balanced, Coefficient, and Subscript.

THANKS SO MUCH, Have a good day!!!

Answers

Matter cannot be created or destroyed.
The mass of the reactants in a chemical reaction will equal the mass of the products

Hope this helps :)

The rising magma that may result from this type of plate movement may produce


HELP

Answers

Answer:

Tectonic plates

Explanation:

Which of the following is the best example of potential energy?

Group of answer choices

A car stopped at the top of a hill

A swimmer doing the backstroke

A bird making a nest

A gymnast doing a cartwheel

Answers

Answer:

A car stopped at the top of a hill

Explanation:

Potential energy is the energy that is stored in an object due to its position relative to some zero position.

therefore, the answer is the first option

=> A car stopped at the top of a hill

hope this helps and is right :)

A car stopped at the top of the hill

Explain the energy transformation that occurs when food is digested.

Group of answer choices

Electrical energy transforms into mechanical energy.

Chemical energy transforms into mechanical energy.

Mechanical energy transforms into chemical energy.

Thermal energy transforms into electrical energy.

Answers

Answer:

C. Mechanical energy transforms into chemical energy.

Explanation:

Mechanical energy is used to chew the food, which is made up of chemical bonds. When we chew, those bonds break, releasing chemical energy that we utilize and consume.

Hope this helped. Have a nice day.

C: Mechanical energy transforms into chemical energy.

What geometric shape is the carbon dioxide molecule? The Lewis structure for CO2 contains two double bonds.

Answers

Answer: Linear

Explaination: The central atom of a carbon dioxide molecule is carbon. Carbon is tetravalent which just means it has 4 valence electrons. Because the valence shell isn’t full, the carbon atom can bond with other atoms creating a total of 4 bonds. This then allows the carbon to double bond with 2 oxygen atoms. Now, the atoms in the CO2 molecule Don’t share the electrons evenly because of atomic number or proton count. Because oxygen has an atomic number of 6, carbon has an atomic number of 4, and opposites attract (referring to the positivity of the nucleus and the negativity of the shared electrons), the oxygen atoms will have a slightly negative charge (-) and the oxygen will have a slightly positive charge (+ ). Therefore, the slightly negative oxygen atoms repel creating that linear shape.
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