2. Calculate the kinetic energy of a dodgeball that has a mass of 2 kg and velocity of 4 m/s after being thrown.
a. 32J
b. 64 J
c. 16 J
d. 8J

Answers

Answer 1

Answer:

c.16J

Explanation:

because kinetic energy =1/2mv²

1/2 ×2×4²=16J


Related Questions

practice: density calculations

Answers

What about it?
Tell us more

The amount of energy at each trophic level in an ecosystem decreases as it moves through the ecosystem. Typically, only about 10 percent of the energy at one trophic level is transferred to the next level. The remaining energy is lost through metabolic processes as heat.

Suppose that, in the ecosystem modeled above, 150,000 kcal (kilocalories) of energy are contained within green plants. Assuming that the amount of energy transferred from one trophic level to the next is exactly 10 percent, determine the following amounts of energy in the ecosystem.

Answers

Answer:

Explanation:

Energy transferred to next trophic level=10%×150,000kcal

=10/100×150,000

=15,000kcal

The amount of the energy in the ecosystem should be considered as the 15,000kcal.

Calculation of the amount of energy:

Since there is  150,000 kcal (kilocalories) of energy are contained within green plants.

And, 10 percent of the energy at one trophic level is transferred to the next level.

So here the amount of energy be like

= 10% of 150,000

= 15,000 kcal

Hence, The amount of the energy in the ecosystem should be considered as the 15,000kcal.

Learn more about energy here: https://brainly.com/question/11233305

The maximum number of individuals that a population
can support and sustain is known as ?
A Carrying capacity
B Limiting Factor
C Migration
D Density

Answers

Answer:

the answer would be migration

When you flex your knee, where are the fulcrum and the load? Where is the muscle that provides the effort located?

Answers

Explanation:

the fulcrum is the knee joint

the load is probably the radius and ulna with the muscle on it

while the effort could be tendons and the muscle on the femur

Earth’s rotation caused surface currents in the Northern Hemisphere to

A. Curve Clockwise

B. Move in straight lines

C. Curve Counterclockwise

D. Move in diagonal lines

Answers

Answer: A or C

Hope it helps
the answer is A because earth rotates on its axis, circulating air deflecting towards the right in the northern hemisphere so if it is going right it is clockwise:)

Some argue that solar power should be the main energy source for the United States. Which argument could be used against this idea? A. It contributes to global warming. B. It can only be produced in sunny areas. C. It is a nonrenewable resource. D. It releases greenhouse gases.

Answers

Answer:

A. It contributes to global warming

Explanation:

Solar power is the power of the future and is an essential nonrenewable source of energy for man. Solar power is driven by the incoming solar energy in the form of solar rays.  Solar power is eco-friendly and doe not cause any harm can be sued in the summer season and has ample scope for greenhouse gases. As per the statement, the solar power should be used as the main energy source in U.S can be contradicted by saying it contributes to global warming.

The concept of induced fit refers to the fact that a. Substrate binding may induce a conformational change in the enzyme, which them brings catalytic groups into proper orientation. b. When enzymes bind substrates, the substrates are bought into proximity to make a chemical reaction favorable. c. When a substrate binds to an enzyme, the enzyme induces a loss of water from the substrate. d. When a substrate binds to an enzyme, free energy is released due to non-covalent interactions.

Answers

Answer:

Option A, Substrate binding may induce a conformational change in the enzyme, which them brings catalytic groups into proper orientation.

Explanation:

Induced fit concept refers to introduction of continuous change of enzyme conformation on substrate binding. This change in the shape of enzyme either inhibit or enhance the activity of enzyme. This makes the enzyme catalytic and hence lower the activation energy thereby increasing rate of reaction.

The kidneys and sweat glands both work to prevent excesses of
a) either uric acid or urine in the body.
b)either water or salt in the body.
c)either carbon dioxide or oxygen in the body.
d) either feces or pH levels in the body.

Answers

Answer: The kidneys and sweat glands both work to prevent excesses of either water or salt in the body

Explanation:

The kidneys and sweat glands both work to prevent excesses of either water or salt in the body. Thus, the correct option is B.

What is function of kidney and sweat glands?

Both the kidneys and the sweat glands excrete nitrogenous wastes, water and electrolytes. They are also involved in maintaining acid-base balance.

kidney is the organelle present below the abdomen whereas the sweat gland is exocrine glands that release the substances into a duct or opening to the inside or outside of the body.

For more information regarding kidney and sweat glands, visit:

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A person with a bacterial infection begins to feel hot and feverish. This response MOST likely helps the body fight infection by —

Answers

Answer:

making it hard for bacteria to leave the body

Explanation:

At what light intensity do both sun plants and shade plants have the same rate of
photosynthesis?

Answers

Answer:

The rate of photosynthesis is at a maximum over a narrow range of light intensities.

Explanation:

Light provides the energy required to drive the process of photosynthesis. Starting from a low light intensity, the rate of photosynthesis increases as intensity increases.  Hopefully helps ig

Which type of law is used to discipline members of the armed services?

Answers

Answer: D

Explanation: because they are in the military and that’s the only law I would recommend if someone needed discipline in the military

through which plant structure does water move by capillary action?

Answers

Answer:

Xylem

Explanation:

What is one characteristic that a star’s spectrum can reveal?
A.
its direction
B.
its temperature
C.
when it was formed
D.
its constellation

Answers

Answer:

B. Temperature

An igneous rock has a coarse texture and is dark in color. How else can this rock be accurately described?

small crystals
cooled quickly
produced from magma
formed at Earth’s surface

Answers

Answer:

C. produced from magma.

D. formed at Earth’s surface

Explanation:

Earth crust refers to the outermost layer or thin shell which makes up the earth such as sedimentary, metamorphic and igneous rocks.

The Earth crust is typically made up of two (2) main types;

1. Oceanic crust: this crust has a thickness ranging from 5 km to 10 km and comprises of denser rocks such as diabase, gabbro and basalt.

2. Continental crust: this crust has a thickness ranging from 30 km to 60 km and comprises of minerals such as quartz, silicate, feldspar, aluminum and less dense rocks such as granite

An igneous rock has a coarse texture and is dark in color. Also, an igneous rock can be accurately described as being produced from magma and formed at Earth’s surface.

Answer:

Produced from magma

Explanation:

I got it right on the test hope this helps

☺️

Dave is perched on a tree branch. Which factor determines his potential energy?

Answers

Answer:

Gravitational Potential Energy is determined by three factors: mass, gravity, and height. All three factors are directly proportional to energy.

Explanation:

Answer:

He is not moving so he is using potential energy

Explanation:

I hope this helps

I NEED HELP ASAP PLEASE!!

Answers

Answer:

yes you're good. D its the right

what does it mean to say that CO2 becomes "fixed" during photosynthesis

Answers

Answer:

What does it mean to say that CO2 becomes "fixed" in talking about photosynthesis?

A. CO2 becomes bonded to an organic compound.

Explanation:

True or False: There are no shortcuts in
dichotomous keys!

Answers

True

You can’t skip any step; you need to do each step in order.

Answer:

True

Explanation:

No need to skip

PLEASE HELP ITS MY LAST QUESTION
Oxygen is a product of the electron transport chain.
True or False

Answers

Answer:

False :)

hope this helps m8

It’s False. I’m sure that this is the answer.

Choc
Fill in the blanks to complete these sentences about rock characteristics.
A rock is an
of minerals.
The
of a rock is a result of its mineral composition.
Most rocks contain more than one type of

Answers

Answer and Explanation:

A rock is an made of minerals??

The forming of a rock is a result of its mineral composition??

Most rocks contain more than one type of mineral??

Answer:A rock is an made of minerals??

The forming of a rock is a result of its mineral composition

Explanation:

The diagram below shows a ciliated cell from the lining of the airway.

Which of the following states its function?Required to answer. Single choice.
(1 Point)


A)it is the place where diffusion of gases take place

B)it moves mucus and sweeps dust from lungs

C)it secretes trypsin

Pls tell meeee quickkk

Answers

Answer:

the answer is a. any ciliated cell in lungs catches bacteria & debris from lungs causing cough, difficulty breathing, etc.

can develop into asthma, infection of pleura, and bronchitis...

How do trees help reduce carbon dioxide in the atmosphere?

Answers

Explanation:

Trees, like all plants, use the energy of sunlight to take carbon dioxide (CO2) from the air and water from the ground through the mechanism of photosynthesis. They release oxygen into the air during the process of turning it to wood.

and no- this is not copied :)

Prior to Mendel, scientists thought that an offspring _____.


inherited traits from only one parent

blended the traits of both parents

demonstrated traits randomly

exhibited certain traits from each parent

Answers

Answer:

blended the traits of both parents

Explanation:

The image here shows potential outcomes for chromosomes at a particular stage of meiosis. Which questions appropriately assess what is happening in the image. Select ALL that apply.
A) How does crossing over increase the outcome of meiosis?
B) How does fertilization increase genetic diversity in a diploid organism?
C) How does independent assortment increase genetic diversity during meiosis?
D) How many potential combinations result from chromosomes alignment during metaphase I?
E) How does chromosome methylation result in silencing specific genes during gamete formation?

Answers

According to the random arrangement of homologous chromosomes in the equatorial plane, the correct question is D) How many potential combinations result from chromosomes alignment during metaphase I?

How does the random arrangement of tetrads occur?

During metaphase 1, chromosomes' homologous pairs migrate to the equatorial plane. Once there, they randomly aline facing their kinetochores to the opposite poles.

The random arrangement of tetrads is different in every cell going through the meiosis process. This is because there is no equal alinement between two cells.

When tetrads arrange in the equatorial plane, there is no predetermined order. Each homologous chromosome of each tetrad faces any of the poles and then migrates to it while separating. Each of the chromosomes has two possibilities for orientation at the plane.

When the new haploid cells are formed, the number of variations in each cell is also different and depends on the chromosomes that form that cell.

This random order in the equatorial plane is what introduces variation into the gametes.

The correct question is D) How many potential combinations result from chromosomes alignment during metaphase I?

You can learn more about the random arrangement of homologous chromosomes at

https://brainly.com/question/14140702

https://brainly.com/question/8006347

https://brainly.com/question/1185300

Answer:

C and D

Explanation:i just did the problem on USA test prep

In order to assign a Richter magnitude to an earthquake event, a scientist would have to measure the _________ waves on a seismogram.
a. secondary
b. surface
c. primary

Answers

Primary waves on a seismograph

PLS ANSWER QUICK! I WILL GIVE POINTS, ITS JUST A YES OR NO QUESTION!


In two or more complete sentences, describe a scenario where human activities are related to an increase or decrease in biodiversity in an ecosystem.

I WAS THINKING OF WRITING ABOUT THE DEFORESTATION IN THE AMAZON, HOW THAT CAN KILL THE ANIMALS. OBV IF THE ANIMALS ARE DEAD THAT CAUSES A DECREASE IN BIODIVERSITY. IS THIS RIGHT?

Answers

Answer:

Yes?

Explanation:

Sedimentary rocks such as sandstone often contain cracks or ripples. These marks show that a number of sedimentary rocks form

A. In pockets of molten rock.

B. Inside ice in mountain ranges

C. Under sands in the desert

D. At the bottom of bodies of water

Answers

C the under sands in the desert

Why don't you have mechanical energy
when
you are
laying on the ground?

Answers

Answer:

If an object is lying on the ground, and is nowhere near a "hole" or a cliff, then for the purposes of this system, the object would have a height of zero, therefore would have no gravitational potential energy. And therefore, no work could be performed on the object by gravity.

Explanation:

Why do mutations code proteins?

Answers

Answer:

A nonsense mutation is a genetic mutation in a DNA sequence that results in a shorter, unfinished protein product. DNA is a chain of many smaller molecules called nucleotides. During protein formation, DNA (or RNA) nucleotide sequences are read three nucleotides at a time in units called codons, and each codon corresponds to a specific amino acid or stop signal (stop codon).

Explanation:

How does gene regulation relate to organism complexity?

Answers

Answer:

Organisms that are more complex, such as eukaryotes, have cells that are specialized for specific functions. Gene regulation needs to be more complex to produce these specialized cells for complex organisms.

Hope this helps!

More complex organisms such as eukaryotes have cells that are specialized for specific functions where gene regulation needs to be more complex for complex organisms to produce these specialized cells.

What is Gene regulation?

The process of turning genes on and off, defined as gene regulation which is an important part of normal development. For example, genes turn on and off in different patterns during development to make a brain cell look and function differently than a liver cell or a muscle cell.

Gene expression is controlled at two levels which is transcription which is controlled by limiting the amount of mRNA that can be produced from a particular gene and the second control is through post-transcriptional events which allow the translation of mRNA into protein.

Thus, more complex organisms such as eukaryotes have cells that are specialized for specific functions where gene regulation needs to be more complex for complex organisms to produce these specialized cells.

Learn more about Gene expression, here:

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