The equation for the conservation of mechanical energy is:
A. PE (before) + KE (before) = PE (after) + KE (after).
B. KE = 1/2mv.
C. Total PE before an event = total PE after the event.
D. PE (before) + KE (before) = 0.

The Equation For The Conservation Of Mechanical Energy Is:A. PE (before) + KE (before) = PE (after) +

Answers

Answer 1

Answer:

The answer is A because the equation is  KEi+PEi=KEf+PEf

i means initial (before) and f means final (after)


Related Questions

what are phrasal verbs. please help will give brainliest​

Answers

Answer:

In English traditional grammar, a phrasal verb is the combination of two or three words from different grammatical categories: a verb and a particle, such as an adverb or a preposition — to form a single semantic unit on a lexical or syntactic level. Examples: turn down, run into, sit up.

Explanation:

1. How much kinetic energy does an apple with a mass of 0.25 kg have if it is falling at a speed of
10m/s

Answers

I hope this helps.......

Need help please????????!!!!!!!!!!

Answers

Answer:

Your education back ground

Explain the relationship between magnetic fields and magnetic force.

Answers

Answer:

Magnetic field is the strength of magnetism created by a magnet, whereas the magnetic force is the force due to two magnetic objects. The concepts of magnetic field and magnetic force are widely used in fields such as classical mechanics, electromagnetic theory, field theory and various other applications.

Explanation:

When hit with a bat which ball will accelerate more?

A 2kg ball
A 15kg ball
A 10kg ball
A 5kg ball

Answers

2kg ball
A=f/m
Higher mass is less acceleration

A vibrating object with a high frequency would be
described as having a low period.
True or false

Answers

Answer:

False

Explanation:

It would be described as having a long period

A vibrating object with a high frequency would be

described as having a low period is a false statement.

The individual air molecules do not "travel" with the wave. They just vibrate back and forth. When the vibrations are fast (high frequency), you hear a high note. When vibrations are slower, you hear a lower note.

What is frequency ?

"Frequency is the number of occurrences of a repeating event per unit of time. "It is also occasionally referred to as temporal frequency to emphasise the contrast to spatial frequency, and ordinary frequency to emphasise the contrast to angular frequency.

Other units: cycles per second (cps); revolutions

SI unit: hertz (Hz)

In SI base units: s−1

Derivations from other quantities: f = 1 / T

What is period ?

"A period T is the time required for one complete cycle of vibration to pass a given point. "As the frequency of a wave increases, the period of the wave decreases. Frequency and Period are in reciprocal relationships and can be expressed mathematically as: Period equals the Total time divided by the Number of cycles.

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What do MRI and ultrasound have in common as diagnostic imaging techniques? Check all that apply.

Answers


Answer:
non invasive and tomographic imaging.
Explanation:
MRI and ultrasound have common as diagnostic imaging and techniques are non invasive and tomographic imaging.
non invasive means when there is no break is created in the skin for the treatment where MRI and Ultrasound both uses non invasive technique.
tomographic imaging is imaging of section by penetrating some waves inside the body and get the imaging of the patient body and this type of diagnosis is used in both MRI and Ultrasound.

Your family drives to the mountains one weekend. You drive 55miles for the first hour and the next 3 hours
you travel a distance of 180miles. What's your average speed for the 4 hours ?

Answers

Answer:Jane drives at an average speed of 45 mph on a journey of 135 miles.

Explanation:

What do simple machines decrease the need for, in order to make work easier?

Answers

Answer:

Simple machines can actually make more work due to friction. Simple machines make work easier to do by decreasing the force required by increasing the distance over which the work is done. _____increasing___ the distance that force is applied.

Waves transfer _________________, not the _____________ with it. A ______________________ causes particles in matter to move back and forth at right angles to the direction in which the wave travels. High points in a transverse wave are called ________________. Low points are called ________________. A ________________ wave causes particles in matter to move back and forth along the same direction in which the wave travels. The places in a longitudinal wave in which the coils are squeezed together are called ______________. The places in the wave in which the coils are spread apart are called _________________. The ________________ of a transverse wave is the distance between two adjacent crests or two adjacent troughs. The _________________ of a compressional wave is the distance between two adjacent compressions or rarefactions.. The _____________ of a wave is the number of wavelengths that pass by a point each second. Frequency is measured in units of _____________. The ___________ of a wave depends on the medium in which the wave travels. To make a wavelength of rope shorter, one should shake the rope at a ____________ frequency. The speed of a wave can be found using the equation ________________. As the wavelength of a wave increases, the frequency of the wave _______________. The energy of a wave depends on its ______________________.

Answers

Explanation:

(Sorry but we can prosses your answer)

A high fountain of water is located at the center of a circular pool. Not wishing to get his feet wet, a student walks around the pool and measures its circumference to be 15m. Next, the student stands at the edge of the pool and uses a protractor to gauge the angle of elevation at the bottom of the fountain to be 55°. How high is the fountain?

Answers

Answer:

The fountain is 3.43 m high.

Explanation:

Circumference of the pool = 15 m.

C = 2[tex]\pi[/tex]r

where C is the circumference and r its radius.

r = [tex]\frac{C}{2\pi }[/tex]

 = [tex]\frac{15}{2(\frac{22}{7}) }[/tex]

r = 2.3864

radius of the pool = 2.40 m

So that the height of the fountain, h, can be determined by applying trigonometric function.

Tan θ = [tex]\frac{opposite}{adjacent}[/tex]

Tan 55 = [tex]\frac{h}{2.4}[/tex]

h = Tan 55 x 2.4

  = 1.4282 x 2.4

  = 3.4277

h = 3.43 m

The height of the fountain is 3.43 m.

Calculate the power of a pump that can lift 70 kg of water through a vertical height of 16m in 10 seconds?

Answers

Answer:

1120

Explanation:

power =force ×velocity

=700*1.6=1120

Will an objects mass affect the kinetic energy? (If then because answer)

Answers

Answer: Mass and kinetic energy have a positive relationship, which means that as mass increases, kinetic energy increases, if all other factors are held constant

Explanation:

Yes, mass affects the kinetic energy due to their positive relationship.
The formula for kinetic energy is
K = 1/2 x Mass x Velocity^2

So if the mass changed then the kinetic will change

PLEASE HELP EMERGENCY!!!
Which statement represents a correct hierarchical organizational relationship
among living things?
A Organs make up cells and cells make up atoms.
B Atoms make up tissues and tissues make up cells.
C Cells make up organs and organs make up tissues.
D Cells make up tissues and tissues make up organs.

Answers

Answer:

Living things are highly organized and structured, following a hierarchy that can  A molecule is a chemical structure consisting of at least two atoms held In larger organisms, cells combine to make tissues, which are groups of  An organ system is a higher level of organization that consists of functionally related organs.

Explanation:

Living things are highly organized and structured, following a hierarchy that. A molecule is a chemical structure consisting of at least two atoms held In larger organisms.

What is Living organisms?

Cells combine to make tissues, which are groups of  An organ system is a higher level of organization that consists of functionally related organs.

The fact that all living things are composed of cells—which are regarded as the foundation of life—is what first distinguishes them from other types of organisms. The remarkable thing about cells is that, despite their small size, they can join together to build extremely vast structures.

Multicellular organisms are extraordinarily sophisticated creatures with amazing cellular organization. This organization starts deep within your DNA and reaches all the way up to you as an individual.

Therefore, Living things are highly organized and structured, following a hierarchy that. A molecule is a chemical structure consisting of at least two atoms held In larger organisms.

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PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer this correctly!!!! (40pts)

Answers

Answer: object is not moving

Explanation:

Two by four about a three the espn by the Xbox 360 by the one two three and the logical by the fire the iso cohedron uh the Isosceles and the diameter by the three by four?

Answers

Answer:

divided by 2 plus one entity_secured_pace_nun_box 9 divided by oee burned akward potion tri tour all around divided by 3 divided by 4

Explanation:

So the first few words in this statement talks about two and four being equal to around three therefore giving you "divided by 2" as you need to divide the four by 2 and add one to get 3. The next statement "the espn by the Xbox 360", espn can be deemed as a secured entity that paces around a nun therefore giving you entity_secured_pace_nun and since this is being multiplied by a box and by 360, you apply the "Improve Rule of Baseless Base". This rule allows you to get entity_secured_pace_nun_box_9. Box comes from multiplying what we have with box and the 9 comes from adding 3+6+0. Since a logical fire is present in this equation, you burn the letters in "two three" that have no protection, these letters are t,w,t,h, and r. Next, you can take cohedron that sounds like couldron and brew yourself an akward potion with the tri sided isosceles. The diameter can be seen as a round up rule that allows you to regroup the answer you have so far. The "by the three by four" can easily be translate from the "Baseless Base Rule Compilation" giving you divided by 3 and divided by 4. That is why the answer is divided by 2 plus one entity_secured_pace_nun_box 9 divided by oee burned akward potion tri tour all around divided by 3 divided by 4. No need to thank me.

Which phase of cell division is shown?

Exploring meiosis.


A. metaphase


B. prophase


C. anaphase


D. telophase

Answers

Answer:

Anaphase

Explanation:

This is because the spindle fibres have shortened and is pulling the chromatids towards the poles of the cell. The chromatids have also separated.

The cell division which is shown in the picture is anaphase. The correct option is C.

What are the phases of meiosis?

Meiosis is divided into two main phases, each with its own set of subphases:

1 Meiosis I:

a. Prophase I: This is the longest and most complex phase of meiosis. During this phase, homologous chromosomes pair up and form bivalents, and crossing over occurs between the homologous chromosomes. The nuclear envelope breaks down, and spindle fibers form from the centrioles at opposite poles of the cell.

b. Metaphase I: During this phase, the homologous chromosomes line up along the metaphase plate, with one chromosome from each homologous pair facing each pole of the cell.

c. Anaphase I: During this phase, the spindle fibers contract and pull the homologous chromosomes towards opposite poles of the cell.

d. Telophase I: During this phase, the chromosomes reach the poles of the cell and the nuclear envelope reforms around each set of chromosomes. The cell then undergoes cytokinesis, resulting in two daughter cells.

2. Meiosis II:

a. Prophase II: During this phase, the nuclear envelope breaks down, and spindle fibers form from the centrioles at opposite poles of the cell.

b. Metaphase II: During this phase, the chromosomes line up along the metaphase plate, with sister chromatids facing opposite poles of the cell.

c. Anaphase II: During this phase, the spindle fibers contract and pull the sister chromatids towards opposite poles of the cell.

d. Telophase II: During this phase, the chromosomes reach the poles of the cell and the nuclear envelope reforms around each set of chromosomes. The cell then undergoes cytokinesis, resulting in four haploid daughter cells.

Meiosis involves two rounds of chromosome segregation, resulting in four haploid daughter cells that are genetically distinct from the parent cell.

Therefore, The correct option is C i.e anaphase.

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what is the definition of the word amplitude

Answers

Explanation:

Amplitude, in physics, the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position. It is equal to one-half the length of the vibration path. ... Waves are generated by vibrating sources, their amplitude being proportional to the amplitude of the source.

Centripetal acceleration depends directly on the square of the object's speed and inversely on
the radius of the circle.

A-True

B-False

Answers

Answer:

True.

Explanation:

The formula for the centripetal acceleration of an object can be calculated by the formula as follows :

[tex]a_c=\dfrac{v^2}{r}[/tex]

Where

v is the speed of an object

r is the radius of the circle

It means, the centripetal acceleration depends directly on the square of the object's speed and inversely on  the radius of the circle. Hence, the given statement is true.

10
Select the types of data that describe climate. (You may select more than one
correct answer)
one day's
Temperature
average ocean
depth
average
precipitation
annual wind
speed

Answers

Answer:

temperiture or annual wind speed.

Explanation:

What are the main differences between the manual, oscillate and pulse functions?

Answers

What are the main differences between the manual, oscillate and pulse functions? Manuel function can be used when we move it. Oscillate function automatically moves on its own. The pulse function mimics the pulse of a heart rate and can only be used by pushing the button.

The main differences between the manual, oscillate and pulse functions are;

Manual function requires work when we move it. Oscillate function works with automation.The pulse function follow pulse of a heart rate is used for pushing the button.

A pulse can be regarded as a signal processing which is  is rapid, transient change in the amplitude of a signal from a baseline value to a higher or lower value.

The Oscillate function works with automation and it requires some automated system.

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The baseball diamond is a square with sides 27.4 m long. If the positive x-axis points from home plate to first base and the positive y-axis points from home plate to third base, find the magnitude and the direction angle of the displacement vector is a base runner who has just hit A) a double, B) a triple, and C) a home run.

Answers

Answer:

What is the magnitude of the player 's displacement? A baseball "diamond" is a square, each side of length 27.4 m, with home plate and if each length of the base is 27.4 m, and the baseball player ran to third base,Then, the baseball player is 27.4 feet away from home plate (where he started)below the horizontal.

Explanation:

the sum of vectors we were able to find the displacement of the corridor for each case

a)  d = 38.75 m

b)  d = 27.4 m

c)  d = 0 m

given parameters

the distance of each side of the square r = 27.4m

to find

the distance in three cases

   A) a double

   B) A triple

   c) A home run

The displacement is a vector for which, in addition to the module, it has a direction, so it must be taken into account for the calculations. In the exercise, set a reference system with the x-axis in the direction from Home to first base and the y-axis from home to third base.

To find the displacement we use the Pythagoras theorem

          d = [tex]\sqrt{d_x^2 + d_y^2}[/tex]

if the displacements are on a single axis the addition reduces to arithmetic addition

Let's analyze the different cases:

a) hit a double

runner goes from home plate to second base

          d = [tex]\sqrt{r^2+r^2}[/tex]Ra r² + r²

          d = r √2

          d = 27.4 √2

          d = 38.75 m

b) hit a triple

Runner goes from home plate to third base

the distance from home to first base x = r

the distance from second to third base x = -r

the negative sign indicates that it is going in the opposite direction

         d = [tex]\sqrt{(r-r)^2 +r^2}[/tex]

         d = r

c) Hit a home run

in this case, the runner returns to the starting point, because of a vector the displacement is zero

         d = 0

In conclusion, applying the sum of vectors we were able to find the displacement of the corridor for each case

a)  d = 38.75 m

b)  d = 27.4 m

c)  d = 0

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PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer these correctly!!!! (47pts)

Answers

[tex]\huge\mathfrak\red{answer}[/tex]

Jake was playing making a paper airplane, after making he kept it on the table and went to have food.

Suddenly his brother saw the plane and threw it in the air, The airplane kept flying for about 3m/s and it hit his mother and due to the force the plane stopped.

{kept in on the table>rest

brother threw the plane>moving

it hit his mother>force that stopped it}

(mark me brainliest if you're satisfied with my answer)

[tex]\large\sf\red{thank \: you}[/tex]

a celebrity i would like to meet mind map​

Answers

Answer:

I would wanna meet juice if he was still alive ofc

Explanation:

I would like to meet Micheal Jackson, he was the sweetest person ever! And one of the best artists in the world! :)

Two rocks are at the top of a building. Rock 1 is dropped from rest while Rock 2 is thrown horizontaly at a velocity of 5 ms.
What is the magnitude of the horizontal acceleration of rock 2?>
O m/s 2
2 m/s 2
5 m/s 2
10 m/s2

Answers

Not sure I’m really sorry

A penny is made of the element zinc
plated with the element copper; a nickel
is made of a mixture of the elements
nickel and copper. Some isotopes of
various elements are listed below by
their atomic number and mass num-
ber. Use the periodic table on p. 131
to identify which atoms you would
expect to find in the penny, which you
would expect to find in the nickel,
which you would expect to find in
both, and which you would expect to
find in neither coin.​

Answers

Answer:

Explanation: what is the question?

In a chemical reaction,sodium sulphate and barium chloride are mixed to form barium sulphate(a precipitate)and sodium chloride. (i)What are the reactants in the above reaction? (ii)What are the products?

Answers

Answer:

i) The reactants are sodium sulphate and barium chloride

ii) The products are barium sulphate and sodium chloride.

Explanation:

In chemistry, a chemical reaction occurs when one or more chemical substances usually referred to as REACTANTS undergoes some processes and is converted to one or more different substances known as PRODUCTS.

From the question:

Na2SO4 + BaCl2 ⟶ 2NaCl + BaSO4

​The above balanced equation represents the chemical reaction between sodium sulphate and barium chloride. Both are the reactants because they where the substances that passed through a process ( this involves the breaking of bond that held them together).

The PRODUCTS are barium sulphate and sodium chloride because they are the substances that presented at the end of the chemical reaction.

If an object has a mass of 45 g and a volume of 5 mL, what is that object’s density? Show your calculation?

Answers

D= m/v
= 45g/5ml
=9g/ml

A child sits 2 meters from the center of a merry-go-round rotating with a
tangential velocity of 0.8 m/s. If the force that maintains the child's circular
motion is 25 N, what is the mass of the child?

Answers

The mass is 7.81 kilograms

which of the following is the equation to determine current using resistance and voltage?

1) current = voltage + resistance
2) current = voltage × resistance
3) current = voltage - resistance
4) current = voltage / resistance

​Does anyone know?

Answers

Answer:

Current =voltage /resistance.

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What will you do if you miss your plane? orWhat are you going to do if you miss your plane? 5x3 + 9x - 13x - 2As x approaches --, f(x) approachesAs x approaches +o, f(x) approaches 1.How is this star system different from our solar system?2. what do you think would be different if you were on a planet in this star system? What type of cell and how many are produced after Meiosis?A. Diploid - 4B. Haploid - 2C. Diploid - 1D. Haploid - 4 look i can ask what ever questions i want to ask so don't delete my stuff okk now my question its what is 1+1 in decimal form ????? what is Minerva the goddess of ? help with this plz!! Riley counted the number of balls on one layer of a box, 34. The box has 8 layers. How many balls can the box hold? Central High wants to estimate the number of seniors who plan to go to a 4-year college. Answer the following. Simplify the expression: 5(2n - 3) + 4(-3n + 2)A-9.8n - 1C.--2n - 1D-2n - 7 (HELP PLZ!!!) The Thirteenth Amendment expanded American civil rights by:A. guaranteeing citizenship.B. making slavery illegal.C. protecting voting rights.D. creating school segregation. I need help with this. In the biblical story of David and Goliath, a young boy takes down a giant using only a slingshot. Alluding to this story when describing a battle most likely implies that Semiarid climate regions have areas of grasslands called?A:desertsB:steppes C:savannahs What was the PRIMARY effect of increased racial tensions during the 1920s? Steve was in a devastating car accident. He is taking anabolic steroids to help repair the body tissues injured in the accident. His wife is concerned about the serious side effects of these drugs. What are the side effects, and is she justified in being concerned? What would you say to her? can someone please answer this HELP ASAP!!!Profit is the difference between revenue and cost. The revenue, in dollars, of a company that manufactures cell phones, can be modeled by the polynomial 2x2 + 55x + 10. The cost, in dollars, of producing the cell phones can be modeled by 2x2 15x 40. The variable x represents the number of cell phones sold.What expression represents the profit, and what is the profit if 240 cell phones are sold?40x 30; $2,40040x 30; $9,57070x + 50; $16, 85070x + 50; $28,800 ILL GIVE 50 POINTS AND BRAINLIEST!!! ;) Dose anyone know the answer to this question