Biology Middle School

A 2-kg toy cart is loaded with a brick and pulled at a constant speed along an inclined plane to a height of a seat top. If the mass of the brick is 3.0 kg and the height of the seat top is 0.45 m, what is the potential energy of the cart at the seat top?

Answers

Answer 1
Hope it helps!Please mark me as brainliest!
A 2-kg Toy Cart Is Loaded With A Brick And Pulled At A Constant Speed Along An Inclined Plane To A Height

Related Questions

Please help me I will give you the brain thing and extra points. image below part 4

Answers

Answer:

maybe c

Explanation:

it's mad blurry I can barley see it

the answer is c I think

PLEASE HELP ME !!


Which statement about organisms in the fossil record is correct?


Organisms show a steady decrease in diversity, interrupted by extinction events.

Organisms show an increase in diversity only right after an extinction event.

Organisms show a steady increase in diversity, interrupted by extinction events.

Organisms show a decrease in diversity only right before an extinction event.

Answers

Answer:

Organisms show a steady increase in diversity, interrupted by extinction events.

Explanation:

How quickly do valley glaciers move?


a few centimeters to a few meters per hour

a few centimeters to a few meters per year

a few centimeters to a few meters per day

anywhere from 1 meter to 20 meters per day

Answers

a few centimeters per day

Rosa eats a peanut butter sandwich for lunch. Peanut butter contains a lot of protein, and bread is mostly starch. Rosa plans to go for a run later this afternoon. Rosa is breathing normally. How do her cells use these molecules to release energy for her body to run? (Sentence starter: Rosa's cells use these molecules by...

Answers

Answer:Rosas cells use muscles by running

Explanation:

Give an example of an event that might cause genetic drift. *

Answers

Answer:

by recurring small population sizes, severe reductions in population size called "bottlenecks" and founder events where a new population starts from a small number of individuals.

Answer:

the bottleneck

Explanation:

The lower atmosphere is mostly warmed by radiated heat from Earth's surface. However, water heats up and cools down more slowly than land. Knowing this, which of the following statements is most likely true?
A.
On a sunny day, the air over a lake will be cooler than the air over the bordering land.
B.
On a sunny day, the air over a piece of land will be cooler than the air over a bordering lake.
C.
On a cloudy day, the air over a northern section of the ocean will be warmer than the air over a southern section of the ocean.
D.
On a cloudy day, the air over a southern section of the ocean will be warmer than the air over a northern section of the ocean.

Answers

A is the correct answer!
The answer is probably A! On a sunny day, the air over a lake will be cooler than the air over the bordering land.Please mark me as brainliest and leave a thanks!

Match the muscle with its type.

deltoid: (straited, smooth, or cardiac)
triceps: (straited, smooth, or cardiac)
heart: (straited, smooth, or cardiac)
sartorius: (straited, smooth, or cardiac)
intestine: (straited, smooth, or cardiac)
veins: (straited, smooth, or cardiac)
biceps: (straited, smooth, or cardiac)
trapezius: (straited, smooth, or cardiac)
stomach: (straited, smooth, or cardiac)
gastrocnemius: (straited, smooth, or cardiac)

Answers

I think this would answer your question. I did this in school and I only got a few wrong....

What description explains how a flower produces a seed? (2 points)

Group of answer choices

1.After the stamen produces pollen, the pollen is moved to the petal to produce a seed.

2.As pollen travels down the stamen, fertilization occurs and a seed is produced.

3.When the ovule receives pollen, fertilization occurs and a seed is produced.

4.When the stigma receives pollen, a seed is produced and then fertilization occurs.

Answers

Answer:

Pretty sure its #3

Explanation:

Plants produce flowers to make seeds. To make a seed a flower must be pollinated. Pollen from the male part of one flower travels to the female part of another flower where the seeds are made. ... The petals act like an advertisement to attract various animals, which will carry the pollen from one flower to another.

number 3





i think i’m not the surest

Which best defines nitrogen fixation?

A. The process of creating free nitrogen for plants to absorb

B. The breakdown of nitrogen in the soil

C. The conversion of nitrogen gas into a usable form

D. The destruction of the bonds between nitrogen and other elements

PLEASE HURRY!!!!!!!!!!!!

Answers

Answer:

A

Explanation:

I just know its a that's all

Pls mark me brainliest. The breakdown of nitrogen in the soil

Please answer ASAP:

Predict what will happen to the concentration of pyruvate, NADH, and H+ when ATP synthase is stopped by oligomycin

Answers

Pyruvate no change as there is no change in pathway by blockage of ATP synthase
NADH no change as NADH is oxidized and portions are reduced via complexes
H+ concentration increase as petitions are not utilized by ATP synthase for ATP formation

The concentration of pyruvate and NADH does not no change, however the concentration of H+ increases.

Oligomycin is a toxic substance to humans, produced by bacteria of the Streptomyces type. It acts by blocking the proton channel in a region of the ATP synthase enzyme, inhibiting oxidative phosphorylation. Thus, the electron transport chain is slowed but not completely stopped.

Cellular respiration consists of a metabolic pathway that breaks down the glucose molecule to produce energy in the form of ATP. Stages of cellular respiration are:

GlycolysisPyruvate oxidationKrebs cycle or the citric acid cycleOxidative phosphorylation

Glycolysis consists of the breakdown of glucose to form two pyruvate molecules, where energy is produced in the form of ATP and NADH. Then, pyruvate oxidation occurs, catalyzed by an enzyme called pyruvate dehydrogenase in the mitochondrial matrix. Next, is the Krebs cycle where energy is produced in the form of ATP and other biosynthetic reactions also occur where the intermediates produced are required to make other molecules, such as amino acids, nucleotide bases and cholesterol. Finally, oxidative phosphorylation takes place as a metabolic process that uses energy released by the oxidation of nutrients to produce ATP. It consists of two stages: in the first one, free energy generated by redox chemical reactions in various multiprotein complexes (electron transport chain) and produces an electrochemical gradient of protons (H+) across an associated membrane in a process called chemiosmosis. The respiratory chain consists of three main protein complexes (complex I, III, IV), and several "auxiliary" complexes, utilizing a variety of electron donors and acceptors. The three complexes associate in supercomplexes to channel electron transport molecules, coenzyme Q and cytochrome c, making the process more efficient. So, the proton gradient produced by proton pumping is used to make ATP molecules. Protons move through the ATP synthase down their concentration gradient into the matrix catalyzing the conversion of ADP to ATP.

Then, using oligocycin there will be no change in the concentration of pyruvate since the synthesis of it (from the breakdown of glucose) does not depend upon an ATP synthase. Also, there is no change in the concentration of NADH because it is oxidized and reduced via redox reactions which also does not depend on the enzyme. At last, there is an increase in the concentration of H+ (protons) because its gradient wont be use by the ATP synthase to make ATP molecules.

Learn more about cellular respiration here: https://brainly.in/question/4311203

Please help me I will give you the brain thing and extra points. image below.

Answers

Answer:

Lithium

Explanation:

"Like the other alkali metals, lithium has a single valence electron that is easily given up to form a cation. Because of this, lithium is a good conductor of heat and electricity as well as a highly reactive element, though it is the least reactive of the alkali metals."

It’s def lithium I looked it up jus in case

PLS BE RIGHT HURRY
In humans, one function of the skin is to prevent water loss. Skin releases water or holds in water when necessary.

Which two structures in plants have a similar function to skin?

roots and chloroplasts
phloem and roots
cuticle and stomata
stomata and phloem

Answers

Cuticle and stomata

Why does wind erode the sand in deserts more than the dirt in forests?


There is less water in forests to keep the soil moist.

The dirt in forests is coarser than the sand in deserts.

Forests have larger rocks than deserts.

Deserts have less plant life to hold the soil in place.

Answers

Answer:

I think the answer is D

Explanation:

the tree roots helps to hold the dirt down plus the higher amounts od mositure make the dirt denser

Answer:Wind is a stronger erosional force in arid regions than it is in humid regions because winds are stronger. In humid areas, water and vegetation bind the soil so it is harder to pick up. In arid regions, small particles are selectively picked up and transported.

Explanation:

Use what you know about asexual and sexual reproduction to sort the terms below into the correct column. If the term is related to asexual reproduction, write it in the column on the left. If the term is related to sexual reproduction, write it in the column on the right. If the term is related to both types of reproduction, write it in both columns.
Terms: DNA, male and female, one parent, unique, spores, uniform, traits, egg, and sperm


HELPPP PLEASEE and dont answer something random please actually help

im asking again bc i need help asAPPPPP

Answers

Answer: DNA, one parent, spores, uniform are asexual

and male and female, unique, traits, egg, sperm are sexual

Explanation: Sexual reproduction just means combining genetic material from two parents. Asexual reproduction produces offspring genetically identical to the one parent.

Answer:

DNA, one parent, spores, uniform are asexual

and male and female, unique, traits, egg, sperm are sexual

Explanation:

If the Gene was missing from a parent, could it build the trait??

Answers

traits are built by the person not by the parent (from what i learned) so yes it could
no................xxcvjufjo

Name at least one thing that encouraged rapid growth and diversity in
organisms.

Answers

Answer:

Explanation:

Cambrian explosion

i found it on google sorry if I am wrong! God bless, good luck, and stay safe! :) :) :)

Answer is Cambrian explosion
Brainliest please I’m tryna rank up

Scienceeee i need help asap no rocky lol please actually i need help

Answers

Answer: Erosion and deposition

Explanation: As the water ran through and against the river banks and land, it slowly begins to erode. Also, as deposition occurs (Deposition-When a river deposits the silt and other things in it out into the ocean or where ever it empties.) it creates a delta.

Yeah it’s Erosion and deposition



Explanation: Flowing water picks up soil particles, and carries them along until the flow ebbs and particles sink to the bottom...Anything that reduce the energy of the flow field can cause larger particles to drop below the critical Reynolds number and drop out the fluid stream ( deposition).

PLS BE RIGHT
The image shows a white radish, which is a seed plant
Which describes the root and stem types of this plant?

fibrous root with herbaceous stem
fibrous root with woody stem
taproot with herbaceous stem
taproot with woody stem

Answers

Answer:

Answer choice C is the correct answer.

Explanation:

Hope this helped!

Taproot with herbaceous stem. The taproot is what is under or starts at soil level and grows into the grown in a solid shoot, like the white radish or like a carrot.

Which is an example of primary succession? an oak growing in an abandoned field ferns growing in a forest a new cactus growing next to an old cactus lichens growing on cooled lava rock

Answers

Answer:

its D

Explanation:

goodluck!! ;)

Answer:

Its D

Explanation:

Have a good day

thigmotropism is caused by _____.
1. water
2. gravity
3. humidity
4. auxins

Answers

Answer:

auxins

Explanation:

Answer:

4.auxins

Explanation:

Thigmotropism occurs due to actions of the plant hormone auxin. Touched cells produce auxin which then transfers auxin to non-touched cells.

I NEED THIS ASAP!!!

The mass of Jupiter is 1,898 × 1024 kilograms. The mass of Earth is 5.97 × 1024 kilograms. The mass of the Sun is 1,989,000 × 1024 kilograms.

Based on mass, the number of Earths that could fit inside Jupiter is about_______.The number of Jupiters that could fit inside the Sun is nearly_________.

Answers

1898*1024 = 1,943,552 ( Jupiter)
5.97*1024= 6,113.28 (earth)
1989000*1024 = 2,036,736,000( sun )
So, 1943552/6113.28 = 317.9229480737018, round it and you get 317.9, which means 317 earth’s can fit inside Jupiter.
Now to find how many Jupiter’s would fit inside the sun, you would divide:

2,036,736,000/1,943,552= 1,047.945205479452, rounding it, you would get 1047.9, which means 1047 Jupiter’s can fit inside the sun.

Answer:

318 Earth's can fit inside Jupiter

1,048 Jupiter's can fit inside the sun

Explanation:

I got it 100% correct.

Cell division is controlled by the _____.

style
pistil
nucleus
embryo

Answers

Answer: nucleus

Explanation: Not only does the nuclues control the cells functions but it also goes through mitosis

Plz Help I will give Brainly

Fill in the blanks with the correct words.
The movement of molecules from an area of low concentration to an area of high concentration occurs in _______ transport.

In ______ transport, molecules move from an area of high concentration to an area of low concentration.

Answers

Answer:

first one is active

second is passive

Earthworms add their wastes to the soil and then die and decay in the soil. Which component of the soil are they adding to?

litter

humus

silt

clay

Answers

Answer:

Humus

Explanation:

The importance of earthworms for soil lies primarily in their effect on the decomposition of primary organic matter and the formation of humus. ... Earthworms are involved in the transformation of complex organic compounds into simple forms that can be used by plants.

humus, lmk if I got it correct hope I helped

how does the large intestine prepares wastes for elimination?

asap plz

Answers

the wastes are in a liquid state,as they pass through the colon, which is the second part of the large intestine, excess water is absorbed. The remaining solid wastes are called feces. Feces accumulate in the rectum, which is the third part of the large intestine.

Answer:

The wastes are in a liquid state. As they pass through the colon, which is the second part of the large intestine, excess water is absorbed. The remaining solid wastes are called feces. Feces accumulate in the rectum, which is the third part of the large intestine.

Explanation:

The wastes are in a liquid state. As they pass through the colon, which is the second part of the large intestine, excess water is absorbed. The remaining solid wastes are called feces. Feces accumulate in the rectum, which is the third part of the large intestine.

Hopes this helps girlie!

Then the atom is pushed up against the other and released, how does it move?

Answers

Answer:

All matter is made up of atoms and molecules that are constantly moving. When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. ... The atoms can get closer which results in the matter contracting.

Explanation:

PLEASE HELP! my mom is checking my grades today! i need all assignments done thnx <3 :)

Answers

Provide structure and support, Facilitate growth through mitosis, allow passive and active transport, produce energy, create metabolic reactions,Aids in reproduction
So basically I think someone already answered but I hope your mom was happy lol

plz plz help asap
The movement of tectonic plates in two locations is described below:

Location A: Tectonic plates collide and one plate moves over the other while the other plate is pushed deep into the mantle
Location B: Tectonic plates slide past each other

Which statement is most likely correct?
A. Volcanic eruptions may occur in both locations.
B. There is no chance of earthquakes in the two locations.
C. Mountains may form in Location B but not in Location A.
D. Subduction happens in Location A but not in Location B.

Answers

d is the correct answer

Which parts of a flower are the male structures and which are the female structures?

Answers

Answer:

The main flower parts are the male part called the stamen and the female part called the pistil. The stamen has two parts: anthers and filaments. The anthers carry the pollen.

Explanation:

To a taxonomist a plant is the sum total of all its characteristics.

True
False

Answers

This is true, to a taxamonist, a plant is the sum total of all its characteristics.
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