What is Required for the energy of an object to change

Answers

Answer 1
If we want to accelerate an object, then we must apply a force. Applying a force requires us to do work. After work has been done, energy has been transferred to the object, and the object will be moving with a new constant speed.

Related Questions

How much power does an Ox pulling a plow 20 m cross a field, exerting 120J of work over a period of 15 s?​

Answers

Answer:

8W

Explanation:

Given parameters:

Distance covered  = 20m

Work done  = 120J

Time  = 15s

Unknown:

How much power does the Ox exerts  = ?

Solution:

Power is the rate at which work is being done

  Power  = [tex]\frac{Work done }{time}[/tex]  

 Power exerted by ox  = [tex]\frac{120}{15}[/tex]   = 8W

Which is a unit of momentum?

A) N-m/s
B) kg-m/s
C) kg-m/s2
D) N-m/s2


please hurry i need help asap, will mark brainliest

Answers

Answer:

unit of momentum is kgm/s2

The unit for momentum can be Newton-second (Ns). In the CGS system, if the mass is in grams and the velocity in centimeters per second, then the unit of momentum will be gram-centimeters per second (g⋅cm/s).

What is momentum ?

"Momentum, product of the mass of a particle and its velocity. Momentum is a vector quantity; i.e., it has both magnitude and direction. Isaac Newton's second law of motion states that the time rate of change of momentum is equal to the force acting on the particle. See Newton's laws of motion."

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A force of 6.0 Newton’s is applied to a block at rest on a horizontal frictionless surface over a 7.0 meter span. How much energy is gained by the block.

Answers

Answer:

42J

Explanation:

Given parameters:

Force applied  = 6N

Distance moved  = 7m

Unknown:

Amount of energy gained by the block  = ?

Solution:

The amount of energy gained by the block is the same as the work done on the block.

The work done is the force applied to move the block through a distance;

 Energy gained  = force x distance  = 6 x 7  = 42J

An elephant kicks a 2.5 kg rock that is initially at rest. The

net force on the rock varies with time as shown below.

What is the rock's change in momentum between 0 ms

and 20 ms?

Answers

0.20Answer:

Explanation:

Can a solution be separated by filtration?​

Answers

Answer:

Filtration is a method for separating an insoluble solid from a liquid. When a mixture of sand and water is filtered: the sand stays behind in the filter paper (it becomes the residue ) the water passes through the filter paper (it becomes the filtrate )

Explanation:

Listo!

Filtration is a method for separating an insoluble solid from a liquid.

A spring has a constant of 875 N/m. What hanging mass will cause this spring to stretch 4.5 m?

Answers

Answer:

8) A hanging 7.5 kg object stretches a spring 1.1 m. What is the spring constant? 1 . 1 66. 82 NIMO 9) A spring has a constant of 875 N/m. What hanging mass will cause this spring to stretch 4.5 m? Iouliply then divide 875 X 4. 2- - (4 04. 7919) 10) A spring with a spring constant of 25 N/m is stretched 65 cm. What was the force used? 11) A 25 N force stretches a spring 280 cm. What was the spring constant? 12) A 75 N force stretches a spring 175 cm. What was the proportionality constant? 8) 66.82 N/m 9) 401.79 kg 10) 16.25 N 11) 8.93 N/m 12) 42.86 N/m

Explanation:

A spring has a constant of 875 N/m. and the mass which will cause this spring to stretch 4.5 meters is 401.78 kg.

What is Spring constant?

The spring constant is a characteristic of a spring which is defined as the ratio of the force affecting the spring to the displacement which is caused by that force. The SI unit of spring constant is N.m⁻¹ (Newton per meter).

The spring constant is:

F = -k/ x

where, k is the spring constant

F denotes the force,

and x denotes the change in the length of the spring.

k = 875N/m

x = 4.5m

We know that

Kx = mg

m= kx/ g

m = 875 × 4.5/ 9.8

m = 401.78kg

Therefore, the mass which will cause this spring to stretch 4.5 meters is 401.78 kg.

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Most electricity comes from the burning of
A. Fossil fuels B. Trash C. Wood D. None of the above

Answers

Answer:

(A) Fossil Fuels

Answer:

Fossil Fuels

Explanation:

That’s what CK12 told me

Emily roller skates with a constant speed
of 8 miles per hour. How far can she travel
in 3 hours? D = SxT

Answers

Answer:

She can travel 24 miles in 3 hours.

difference between input work and output work with table​

Answers

Answer:

Explanation:

Input work is the work done on a machine as the input force acts through the input distance. ... Output work is the work done by a machine as the output force acts through the output distance. The machine does to the object to increase the output distance.

A stationary 10 kg object is located on a table near the surface of the earth. The coefficient of kinetic friction between the surfaces is 0.2. A horizontal force of 40 N is applied to the object.

Answers

Answer:

2.04m/s²

Explanation:

Complete Question

A stationary 10 kg object is located on a table near the surface of the earth. The coefficient of kinetic friction between the surfaces is 0.2. A horizontal force of 40 N is applied to the object. Find the acceleration of the object.

According to Newtons second law;

\sum F_x = ma_x

F_m - F_f = ma_x

Fm is the applied force

Ff is the frictional force

m is the mass

a is the acceleration

Substitute the given values

40N - nmg = 10a

40 - 0.2(10)(9.8) = 10a

40 - 19.6 = 10a

20.4 = 10a

a = 20.4/10

a = 2.04m/s²

Hence the acceleration of the object is 2.04m/s²

Which part of the electromagnetic spectrum is typically used to make images based on the temperatures of objects?

X-rays
radio waves
infrared light
visible light

Answers

Answer:

Which part of the electromagnetic spectrum is typically used to make images based on the temperatures of objects?

X-rays

radio waves

infrared light<<<----- CORRECT

visible light

Explanation:

Edge 2021

Infrared light is typically used to make images based on the temperatures of objects.

What is meant by electromagnetic spectrum?

The range of all EM radiation arranged from high to low frequency (short to long wavelength) according to their frequency or wavelength. is known as the electromagnetic spectrum (EM).

Here,

Similar to visible light, X-rays are a type of electromagnetic radiation. X-rays have a higher energy than light, on the other hand, and can penetrate most materials, including the human body.

Images of inside body tissues and structures are produced using medical x-rays.

Electromagnetic energy in the infrared region of the spectrum can be seen by them. There is a relationship between an object's temperature and the electromagnetic radiation it releases since infrared radiation is strongly related to object temperature.

Hence,

Infrared light is typically used to make images based on the temperatures of objects.

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Give an example of speed making a difference in the amount of kinetic energy. Tell how you know that kinetic energy amount is different in your example.

Please help this is due today

Answers

Answer:

1. A car moving 40 mph has four times as much kinetic energy as one moving 20 mph, while at 60 mph a car carries nine times as much kinetic energy as at 20 mph. Thus a modest increase in speed can cause a large increase in kinetic energy.

PLZ MARK BRAINLIEST THANK AND FIVE STAR:)

Answer:

a car moving 40mph has four times as much kinetic energy as one moving 20 mph, while at 60 mph a car carries nine times as much kinetic energy as at 20 mph.

if you need any more info just dm me

Juan rides his horse with a constant
speed of 18 km/h. How far can he travel
in 1/2 hour?

Answers

Answer:

He traveled 9km

Explanation:

To do this problem you need to use the equation which is Speed= distance/time and this problem gives you the speed which is 18 km/h and it gives you the time 1/2 hour so you write the equation 18= d/ 1/2 which his distance is 9km

Tafu is working with subatomic particles in the physics lab. a positron is traveling in a straight line down the particle accelerator. tafu models its position with the function p(t)= t2 t â 1 where t>1. in the limit calculations below, if you need to use -â or â, enter -infinity or infinity. (a) calculate the limit

Answers

Answer:

Infinity

Explanation:

When you have a limit approaching infinity one method you can use is to remember that the highest power dominants all of the other ones so when we have (t^2)/t-1 like in your problem, we see that t^2 has the highest power of 2 so if that's going to infinity and it's not being divided by any powers higher than it will just be inifinity.

We have that for the Question, it can be said that  in the limit calculations below, if you need to use -â or â, enter -infinity or infinity. the limit is

[tex]Lim_{t->\infty} p(t)= \infty[/tex]

From the question we are told

Tafu is working with subatomic particles in the physics lab. a positron is traveling in a straight line down the particle accelerator.

tafu models its position with the function

p(t)= t2 t â 1 where t>1.

in the limit calculations below, if you need to use -â or â, enter -infinity or infinity.

(a) calculate the limit

Generally the equation for the Question  is mathematically given as

[tex]p(t)=\frac{t^2}{t-1}\\\\Therefore\\\\For Lim_{\infty}\\\\We have\\\\ Lim_{t->\infty} p(t)= Lim_{t->\infty}\frac{t^2}{t-1}\\\\[/tex]

Since, the equivalent degree of numerator (t^2) is greater than that of the denominator

[tex]Lim_{t->\infty} p(t)= \infty[/tex]

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There are several ways to model a compound. One type of model is shown.

What is the chemical formula for the molecule represented by the model?


CHO

C4H9O2

C4H8O

C3H8O2

Answers

Answer:

What is the chemical formula for the molecule represented by the model?

[tex] →CHO\\ →C_4H_9O_2✓ \\→C_4H_8O \\ →C_3H_8O_2[/tex]

2) C4H9O2 is the right answer.
C4h9o2

Your welcome

Good luck

TRUE if the statement is correct and write FALSE if is not.


1. Adolescents can achieve their energy and nutrient requirements by eating a variety of foods daily.

2. Eating regular meals will keep the body fueled by energy needed for the day.

3. Too much sweets and dessert can aggravate skin problems like pimples.

4. The Food Pyramid will guide you on how many servings from each food group is recommended daily.

5. Due to your rapid growth and development at this stage, you have a lesser need for certain nutrients, such as

calcium, iron, protein, and energy foods.

Answers

Answer:

1. True

2. True

3. True

4. True

5. False

Explanation:

1. Indeed, many health experts often recommend that when children reach the age of adolescents (between ages 10 and 19) they should eat a variety of foods daily in other to have enough energy and nutrients needed for development.

2. Having regular meals (mornings, afternoon, and evenings) has for long been encouraged by medical professionals in other to provide the body its fuel.

3. Some skin problems have long been associated with too much consumption of sweets and desserts since these products often contain sugars, and excess processed sugar intake is said to increase acne and eczema.

4. Just as the name suggests, the food pyramid is a visual representation that contains how many servings from each food group in other be healthy.

5. This is false because throughout the growth stages of life it is essential to get the needed food nutrients such as  calcium, iron, protein, and energy foods.

Why is NEWTON'S First Law of Motion often called the LAW OF INERTIA?

Answers

Answer:

According to newtons first law of motion an object remains in its state of rest or motion in a straight line unless an external unbalanced forces acts upon it. This is the reason why Newtons first law of motion is often called the LAW OF INERTIA

HELP PLS 100 POINTS TAKING TEST RN


Suppose you are in a car that is going around a curve. The speedometer reads a constant 30
miles per hour. Which of the following is NOT true?

You and the car are accelerating.

Your speed is constant.

Your velocity is constant.

Your acceleration is constant.

Answers

Answer:

sorry I hate when people press your question and answer with a fake answer for points, however you said it was 100 points and it's not even close lol but it is "your speed Is constant" that is not true

Is gravitational energy a form of kinetic energy or potential energy? Why do you think that?

Please help due today!!​

Answers

Answer:

When something is lifted, work is done on the object against the pull of gravity. This work is converted to a form of potential energy called gravitational potential energy. When the item falls towards Earth like an apple from a tree, gravitational potential energy is converted into kinetic energy.

Make a prediction that answers the question in the purpose:

“How does time affect the temperature of water?”

(Ex-“If we use a ramp, then the ball will roll faster down the ramp because gravity has more time to do work on the ball.”)



Im not good at these, please help quickly.

Answers

As heat always flows from a higher temperature to a lower temperature, this transfer can go both ways .When the air is cold, warm water will transfer energy to the air and cool off. ... If the air is hot, cold water will receive the energy and warm up.

what are the rocky planets? theres more in the attachment
HELP ME PLS

Answers

Answer:

Explanation:

The rocky planets include Mercury, Venus, Earth, and Mars. they are made up of rocks and metals and have solid surfaces.They are the closest four planets to the Sun. The gas giants are  Neptune, Uranus, Saturn, and Jupiter. they are further from the sun and are in the outer part of the solar system. I hope this helps!

f. It is easier to pull a lawn roller than to push it, why?​

Answers

Answer:

because you use more force to push than to pull (well it depends how heavy it is)

Explanation:

Martha, a first-grade teacher, is worried that if doesn't stay In at work to grade papers her principal will think she is lazy She is also worried that if she stays late at work her partner will be angry. This of conflict is known as

Answers

The type of conflict Character vs self

Answer:

Character vs self

Explanation:

The reason is because Martha is thinking to much about the negative things and it is making her feel like she is fighting her own body for control.

how much energy must be absorbed by water with a mass of 0.5kg in order to raise the tempature from 30c to 65c

Answers

Answer:

62760J

Explanation:

Given parameters:

Mass  = 0.5kg  = 500g

Initial temperature  = 30°C

Final temperature  = 65°C

Unknown:

How much energy is absorbed by the water  = ?

Solution:

To solve this problem, we use the expression below:

  H  = m C Δt

  H =  m  x C x (t₂ - t₁ )

m is the mass

C is the specific heat  = 4.184J/g°C

t₂ is the final temperature

t₁ is the initial temperature

So;

              H  = 500 x 4.184 x (65  - 30) = 62760J

The tensions in the rope are 12 n and 10 n . What is the angular acceleration of the pulley?

Answers

Answer:

[tex]\mathbf{\alpha = 16.06 \ rad/s^2}[/tex]

Explanation:[tex]A \ frictionless \ pulley, \ whic h\ can \ be \ modeled \ as \ a \ 0.83 k g \ solid \ cylinder \ with \ a \ 0.30 \ m \ radius,[/tex]  [tex]\ has \ a \ rope \ going \ over \ it[/tex] [tex]The \ tensions \ in \ the \ rope \ are \[/tex] [tex]12 n \ and \ 10 n . \ What \ is \ the \ angular \ acceleration \ of \ the \ pulley?[/tex]

[tex]From \ the \ given \ information:[/tex]

[tex]The \ moment \ of \ inerti a \ of \ a \ solid \ cylinder[/tex] [tex]I = \dfrac{1}{2}mr^2[/tex]

[tex]I = \dfrac{1}{2}(0.83)(0.3)^2[/tex]

[tex]I = 0.03735 \ kg \ m^2[/tex]

[tex]The \ net \ torque = F_1(r) - F_2(r) \\ \\ = 12(0.3) - 10(0.3) \\ \\ = 0.6 \ N.m[/tex]

[tex]Torque (T) = moment \ of \inertia (I) \times angular \ acceleration ( \alpha)[/tex]

[tex]\alpha = \dfrac{T}{I}[/tex]

[tex]\alpha = \dfrac{0.6 \ Nm}{0.03735 \ kg \ m^2}[/tex]

[tex]\mathbf{\alpha = 16.06 \ rad/s^2}[/tex]

What happens when stress builds up at faults?

A. Energy is absorbed
B. Rock can bend and break
C. Plates form on the lithosphere
D. earthquakes develop at earths surface

Answers

Answer:

The answer is D because when the faults move that is the tectonic plates moving. So earth quakes will be forming when the fault moves.

Explanation:

AB just took the test

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A sprinter runs the 50 m dash in 5.6 seconds. What is the sprinter's speed?

280 m/s

0.11 m/s

44.4 m/s

8.93 m/s

Answers

I think it would be 8.93

II. What examples can you find in your home that are examples of kinetic and potential energy (name two for each type
of energy)?
11. Kinetic:
12. Kinetic:
13. Potential
14. Potential:

Answers

Answer:

11. A door accelerating when pushing it.

12. A person sliding along the floor.

13. Water dropping from the faucet.

14. Courtains descending when loosening them.

Explanation:

For kinetic energy, any example that does not move horizontally will do. Something accelerating or decelerating is a good example (Ek=1/2mv^2, where v is velocity).

For potential energy try to think of things moving vertically. Potential energy comes from the height of an object (Ep=mgh, where h is height).

Notice that example 13 and 14 represent potential energy turning into kinetic energy, height becomes lower, so velocity increases.

Plants are eaten by grasshoppers, which are eaten by mice, which are eaten by snakes.

Answers

Answer:

food chain / web lol? was this a question?

How much thermal energy does it take to raise the temperature of 2.5 kg of
plastic from 15°C to 75°C? The specific heat of plastic is 2.60 kJ/(kg.°C)

Answers

Answer:

390kJ

Explanation:

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Sahil watched a demonstration in which a scientist combined two substances in a sealed container and analyzed the results. The ending substances did not look the same as the starting substances.Sahil was given a diagram with the repeating groups of atoms that make up the starting substances, plus information about the properties of the starting and ending substances. He created a model of the repeating groups of atoms that might make up the two ending substances.Does his model correctly show why the properties of the ending substances are different from the properties of the starting substances? Describe what could be correct or incorrect about his model. Debora plans to sew 3 blankets for each of her nieces.How many blankets will Debora sew if she has 5 nieces?A Debora will sew 8 blankets.B Debora will sew 9 blankets.C Debora will sew 12 blankets.D Debora will sew 15 blankets. Can someone help me on this please Factor out the greatest common factor 5x + y = 65x + 3y=-4The y-coordinate of the solution to the system shown is-501120-1 1.Gina buys a new TV for $999.00. She buys during a promotion at the store where she gets a 12percent discount. She will also pay eight percent in sales tax.True or false: Gina will pay eight percent in tax on $999.00, the price of the TV.options:O TrueO False Presented below is information related to Sunland Company at December 31, 2017, the end of its first year of operations.Sales revenue $327,980 Cost of goods sold 148,580 Selling and administrative expenses 52,100 Gain on sale of plant assets 30,840 Unrealized gain on available-for-sale investments 9,370 Interest expense 6,060 Loss on discontinued operations 11,970 Dividends declared and paid 5,190 Compute the following:(a) Income from operations $Entry field with incorrect answer now contains modified data(b) Net income $Entry field with correct answer(c) Comprehensive income $Entry field with incorrect answer(d) Retained earnings balance at December 31, 2017 $Entry field with incorrect answer Implement the method countInitial which accepts as parameters an ArrayList of Strings and a letter, stored in a String. (Precondition: the String letter has only one character. You do not need to check for this.) The method should return the number of Strings in the input ArrayList that start with the given letter. Your implementation should ignore the case of the Strings in the ArrayList. Hint - the algorithm to implement this method is just a modified version of the linear search algorithm. Use the runner class to test your method but do not add a main method to your U7_L4_Activity_One.java file or your code will not be scored correctly. Elaine was on her way to the pet store to buy another rabbit. As Elaine rode her bicycle over the hill, she was surprised to see a frantic wildrabbit dart in front of her and then rush off into the bushes on the other side of the road. Elaine stopped and, to her amazement, saw a red fox runout of the same spot from which the rabbit had come. Quickly the fox, too, disappeared into the bushes across the road. Elaine frowned, crossedher fingers, took a deep breath, and rode on Into town.Which sentence best describes how Elaine probably felt about what she had seen?1. She felt angry about being late to the pet store.2. She felt sorry for the rabbit and hoped it wouldn't be caught.3. She felt sorry for the hungry fox and hoped it would get a meal.4. She felt excited and hoped to see another fox chasing a rabbit. Will Byers wears stilts when he performs on the boardwalk. Otherwise, many members of the crowd can't see his tricks. Is that a complete sentence or a fragment. 3. What determines the frequency (color) of photons? Elle est...EllebabardebavardbavardebabardPlease help PLZ HELP ASAP WILL GIVE BRAINLIST2AlCl3 + 2Al + 3Cl2If 20.0 g of aluminum chloride are decomposed, how many molecules of chlorine gas are produced?A )6.63 x 1022 molecules CIB )2.70 x 1023 molecules Cl2C )1.35 x 1023 molecules Cl2D )9.42 x 1023 molecules Cl2 A pigeon leaves its nest in New York City andflies 5 km due east. The pigeon then flies 3 kmdue north. How far is the pigeon from its nest?PLEASEEEE ANSWERR FASTTT Please help the picture should be there. 1. word that means produced by a living thing2. a word that means NOT produced by a living thing How does farming change the biosphere? A) It increases the amount of carbon dioxide in the atmosphere, contributing to the buildup of greenhouse gases. B) It induces changes in global biogeochemical cycles. C) It speeds up the decomposition of organic matter in soil. D) It contributes to the loss of competing ecosystems, the decrease of biological diversity, and the increase in endangered species. E) All of the above What is the solution of the system? {5xy=21x+y=3 Enter your answer in the boxes. ( , ) i need help in this question can someone help me The equation 3x + 2 = 29 is modeled below.Which is the first step in solving the equation for x?