A dog with mass 14 kg has a kinetic energy of 135.5 J. What is the speed
of the dog?
A. 2.3 m/s
B. 5.1 m/s
C. 3.2 m/s
D. 4.4 m/s

Answers

Answer 1

Answer: D. 4.4 m/s

Explanation:

Answer 2

Answer:The correct answer is 4.4 m/s but I will warn you, A p e x counted it WRONG when I gave this answer.

Explanation:


Related Questions

please awnser and show the ways​

Answers

Answer:

Answers in solutions.

Explanation:

Question 6:

The density of gold is 19.3 g/cm³

The density of silver is 10.5 g/cm³

The density of the substance in Crown A;

Density = mass ÷ volume = [tex]\frac{1930}{100}[/tex] = 19.3 g/cm³

Since the density of gold, given, is 19.3 g/cm³ and the density of the substance in Crown A has a density of 19.3 g/cm³ , then that substance must be gold.

The density of the substance in Crown B;

Density = mass ÷ volume = 1930 ÷ 184 = 10.48913043  g/cm³ ≈ 10.5 g/cm³  (answer rounded up to one decimal place)

Since the density of the substance in Crown B is approximately equal to 10.5 g/cm³ , then that substance is Silver.

The density of substance in Crown C;

Density = mass ÷ volume = 1930g ÷ 150cm³ = 12.86666667 ≈ 12.9 cm³ (answer rounded up to one decimal place)

The density of the mixture:

For 2 cm³ of the mixture, its mass equal 19.3 g + 10.5 g = 29.8 g

∴ for 1 cm³ of the mixture, its mass equal to [tex]\frac{29.8}{2}[/tex] = 14.9 g

Hence the density of the mixture = 14.9 g/cm³ and is not equal to the density of the substance in Crown C.

* Crown C is not made up of a mixture of gold and silver.

Question 7:

An empty masuring cylinder has a mass of 500 g.Water is poured into measuring cylinder until the liquid level is at the 100 cm³ mark.The total mass is now 850 g

The mass of water that occupied the 100 cm³ space of the container = total mass - mass of the empty container = 850 g - 500 g = 350 g

Density of the liquid (water) poured into the container = mass ÷  volume = 350 g ÷ 100 cm³ = 3.5g/cm³

Question 8:

A tank filled with water has a volume of 0.02 m³

(a) 1 liter = 0.001 m³

How many liters? = 0.02 m³ ?

Cross multiplying gives:

[tex]\frac{0.02 * 1}{0.001}[/tex] =  20 liters

(b) 1 m³ = 1,000,000 cm³

0.02 m³ = how many cm³ ?

Cross-multiplying gives;

[tex]\frac{0.02 * 1,000,000}{1}[/tex] = 20,000 cm³

(c) 1 cm³ = 1 ml

∴ 0.02 m³ of the water = 20,000 cm³ = 20,000 ml

Question 9:

Caliper (a) measurement = 3.2 cm

Caliper (b) measurement = 3 cm

Question 10:

A stone is gently and completely immersed in a liquid of density 1.0 g/cm³in a displacement canThe mass of liquid which overflow is 20 g

The mass of the liquid which overflow = mass of the stone = 20 g

1 gram of the liquid occupies 1 cm³ of space.

20 g of the liquid will occupy; [tex]\frac{20 * 1}{1}[/tex] = 20 cm³

(a) Since the volume of the water displaced is equal to the volume of the stone.

∴ The volume of the stone = 20 cm³

(b) Mass = density ×  volume

Density of the stone = 5.0 g/cm³

Volume of the stone = 20 cm³

Mass of the stone = 5 g/cm³ × 20 cm³ = 100 g

a drum crane whirlwinds in 100m of cable when raising a load of 240N through a height of 10m an effort of 30 000 N is needed Calculate the efficiency showing how you obtained your answer​

Answers

Explanation:

mark as brainliest plssssssssssssss!

Alice added sodium chloride to water and stirred the water for several minutes. Alice is most likely trying to demonstrate that ionic compounds
A. are hard
B. can dissolve
C. are clear.
D. can melt.

Answers

Answer:

Can dissolve

Explanation:

B because it does dissolve

Calculate the image position of an object located 25 cm from a concave lens with a focal length 5.0 cm

Answers

2.5 cm no that’s it

5. A vehicle having a mass of 1000 kg had an accident on a wet, but level, concrete road under foggy
conditions. The tires were measured to have y = 0.55 on wet concrete. The driver locked the
brakes, skidded for 6 seconds, and then hit the guardrail causing a very small dent because the
vehicle stopped just as it touched the guardrail. The driver claimed to be driving 65 miles per hour
(29 m/s). You have been hired as an investigator to determine if the driver is telling the truth.
a. What is the weight of the vehicle?
b. The frictional force produces the negative acceleration that reduces the velocity of the
vehicle from its initial unknown speed to zero. Find the value of the frictional force.
Use the frictional force to calculate the acceleration (remember that it is a negative
number). Hint: Use Newton's 2nd Law.
d. Using your acceleration from partc, what was the driver's initial velocity? Hint: Use this
equation - The final velocity is 0 m/s.
6. Complete this form to let me know what your questions are. This helps me get you the help you
need - either during class or individually through videos

Answers

Answer:

Explanation:

1) weight = mg = 9.81*1000 = 9810 Newtons

2) frictional force = normal force *

we must assume that the vehicle is on a flat surface so therefore the normal force is the same as the weight of the vehicle.

frictional force = 9810 * 0.55 = 5 395.5 N

3) acceleration: F = ma, a = F/m

assume that only the frictional force is acting on the vehicle:

a = 5395.5/1000 = 5.3955 m/s

4) the car decelerates at 5.3955m/s

over 6 seconds, the car decelerates by: 32.37m/s

5) original speed = 29m/s final speed = 29-32.37 = -3.37m/s which is a negative number, therefore the vehicle would have stopped before it hit the rail.

6) to get to the rail, the vehicle would have had to be traveling at least 32.37m/s which is 72.41 mph

What is the mass of a 7 kg bowling ball on the moon?

Answers

Answer:

7 kg

Explanation:

Mass remains the same, regardless of gravity. If the mass of the bowling ball is 7kg on Earth, the mass on the moon will be 7kg as well.

Is nitrogen a compound

Answers

Answer:

Nitrogen gas (N2) is a molecule because the bond between the nitrogen atoms is a molecular bond. Water (H2O) is a molecular compound because it is a substance made from more than one kind of element that is held together with molecular bonds

Explanation:

How long does it take a cyclist to increase his velocity from 4.0m/s to 10m/s if he accelerates at 3.0m/s2

Answers

It will take four seconds because you have to increase the speed by 6 m/s, and if you accelerate at 3m/2s, it will take four seconds to accelerate

Write how the pairs of words or phrases are alike and different. Conservation of energy and energy transferConservation of energy: Energy is neither created nor destroyed in an ordinary chemical or physical process; this is also known as the first law of thermodynamics.Energy transfer: The transfer of energy from one object to another or from one form to another.Alike: Different:

Answers

Answer:

Similarities:

Energy can be transferred from one form to another in both systems.

Difference:

Energy can only be created or destroyed in conservation of energy.

Explanation:

Conservation of energy: tell us that energy can neither be created nor destroyed, but can be transferred from one form to another. e.g Chemical to mechanical ( combustion of fuel in vehicle to achieve mechanical work. )

Energy transfer Conservation

Energy can be stored or transferred from one form to another, but it cannot be created or destroyed.

Similarities:

Energy can be transferred from one form to another in both systems.

Difference:

Energy can only be created or destroyed in conservation of energy.

if it takes 3.5 hours for the Hogwarts Express, moving at a speed of 120 mi/hr, to make it from Platform 9 and 3/4 to Hogwarts, how far apart are they?​

Answers

They are 420 miles apart.

Chanel has some cotton candy that came in a cloudy shape. She wants to make it more dense. Which describes the candy before and after Chanel manipulated it? The candy before was a cube, and the candy after was a ball. The candy before was compacted, and the candy after was fluffy. The candy before was fluffy, and the candy after was compacted. The candy before was a ball, and the candy after was a cube.

Answers

Answer:

The candy before was fluffy, and the candy after was compacted.

Explanation:

By definition, something that is fluffy is something very soft, and when you talk about fluffy food (e.g. cakes, cotton candy) it is food that has a lot of air in it. In this case, the cotton candy originally had the shape of a cloud and was not dense, therefore, it was fluffy.

Something that is compact, it something that is dense, solid and generally small. Since Chanel wanted her cotton candy to be more dense, she compacted it .

Answer:

c

Explanation:

a high speed train travels with an average speed of 250 km/h. the train travels for 2 hrs. how far does the train travel

Answers

Answer:

The answer is 500 km

Explanation:

The distance covered by an object given it's velocity and time taken can be found by using the formula

distance = average velocity × time

From the question

average speed = 250 km/h

time = 2 hrs

We have

distance = 250 × 2

We have the final answer as

500 km

Hope this helps you

Answer:

The answer would be 454 miles.

Explanation:

You multiply the average speed by time travelled. Hope this helps!

A force of 6.0 Newton’s gives a 2.0kg block an acceleration of 3.0m/s to the right. The force of friction acting on the block is?

Answers

The force of friction is zero.
Using F = m a = the force needed is 6 N which means no friction can be acting.

what is v^2=0.05-4.9 please i need this asap​

Answers

Answer:

v =2.02

Explanation:

v^2=0.05-4.9

v^2=-4.85

square root both side

v=2.02

^^^^this is a not a perfect square  

Help please asap!!!!

Answers

Answer:

Line A is fastest and Line D is slowest

Explanation:

Line A is the fastest moving object because the bar is steepest. Line A travelled the furthest in the least time, so Line A is moving fastest. Line D is the slowest object because the bar is least steep. Line D travelled the least distance in the most time, so Line D moves the slowest.

Hopefully the answer and explanation helps!

What does normal force have to do with gravity?

Answers

Answer:

grav times mass equals force

Explanation:

Igneous rocks are formed from _____.

sedimentary rocks
fossils and shells
magma
eroded land

Answers

Answer:

magma

Explanation:

actually cooling and solidification of magma

Find the potential energy of the bowling ball from the exercise above that is sitting on a shelf 2 meters high. Remember that g = 9.8m/s. Write equation, substitute values and units into equation, and show final answer.

Answers

Answer:

Explanation:

bv

What happens to the structure of an atom when the atom is ionised?​

Answers

Answer: Explanation:

If the number of electrons is equal to the number of protons then the atom is uncharged and is electrically neutral. However, atoms can gain or lose electrons: increasing or decreasing the negative charge. Ionisation is the addition or removal of an electron to create an ion. ..Gaining an electron creates a negative ion.

Which two options are forms of kinetic energy?
A. Nuclear energy
B. Thermal energy
C. Chemical energy
D. Gravitational energy
E. Sound energy

Answers

Answer:

B. Thermal energy

E. Sound energy

Explanation:

Thermal and sound energy is kinetic energy.

Kinetic energy is the energy that results as a function of the motion of a body or the particles of the medium.

Sound energy is transmitted by the vibration of the particles in the air. The vibration leads to movement of the particles and hence, kinetic energy is produced.

Thermal energy originates as a result of the temperature differences in a body. This temperature difference leads to the increase in the kinetic energy of some particles which also causes vibration and motion of the particles.

The two options which are forms of kinetic energy include:

Thermal energySound energy

What is Kinetic energy?

Kinetic energy is the form of energy possessed by a body by virtue of its

motion.

Thermal energy possesses kinetic energy as a result of the high

temperature bringing about an increase in the collision of the particles.

Sound energy also possesses kinetic energy as a result of the vibrations

through the movement of energy in a medium.

Read more about Kinetic energy here https://brainly.com/question/8101588

An object travels at a constant velocity of 15 m/s for 5.0 seconds. How far does it
move during that time?

Answers

Answer:

Explanation:

Givens:

v = 15 m/s

t = 5 seconds

d = ??

Formula

d = v*t

Solution

d = 15 * 5

d = 75 m

A ball is shot horizontally at 17.3m/s from the roof of a building 55.2 m tall, (use g = 9.8 m/s ^ 2) How far from the base of the building does the ball land?

Answers

Given that,

The initial speed of a ball, u = 17.3 m/s

It is shot from the roof of a 52 m tall building, h = 52 m

It is required to find the distance from the base of the building the ball land. Let the distance be d.

Final velocity of the ball, v = 0 (when it lands)

We can use third equation of motion to find it.

[tex]v^2-u^2=2ad[/tex]

a = -g

[tex]-u^2=-2gd\\\\d=\dfrac{u^2}{2g}\\\\d=\dfrac{(17.3)^2}{2\times 9.8}\\\\d=15.26\ m[/tex]

So, it will land at a distance of 15.26 m.

What is the distance between two spheres (20 kg and 30 kg) attracted by a force of 2 x 10^-5 Newtons.

Answers

2 times 10 to the power of 5 is your answer.

A large bottle contains a number of medicinal tablets each having a mass of 250
mg. The mass of all the tablets is 1 kg. Calculate the number of tablets in the bottle.

Answers

Given parameters:

Mass of each tablet  = 250mg   = 0.25g

Mass of all tablets in the bottle = 1kg  = 1000g

Unknown:

Number tablets in the bottle = ?

Solution:

The number of tablets in the bottle;

    Number of tablets  = [tex]\frac{mass of all tablets in the bottle}{mass of each tablet}[/tex]

                     Mass is the amount of matter that makes up a substance

Number of tablets  = [tex]\frac{1000g}{ 250 x 10^{-3} }[/tex]   = 4000 tablets

Considering the rule of three, the number of tablets in the bottle is 4.

In first place, the rule of three is a way of solving problems of proportionality between three known values and an unknown value, establishing a relationship of proportionality between all of them.

That is, what is intended with it is to find the fourth term of a proportion knowing the other three.  

If the relationship between the magnitudes is direct, that is, when one magnitude increases, so does the other (or when one magnitude decreases, so does the other) , the direct rule of three must be applied.

To solve a direct rule of three, the following formula must be followed, being a, b and c known data and x the variable to be calculated:

a ⇒ b

c ⇒ x

So: [tex]x=\frac{cxb}{a}[/tex]

The direct rule of three is the rule applied in this case as follow:  if 250 mg = 0.250 g is the mass of 1 medicinal tablet, 1 kg = 1000 g is the mass of how many medicinal tablets?

0.250 grams ⇒ 1 medicinal tablet

1000 grams ⇒ x

Then:

[tex]x=\frac{1000 gramsx1 medicinal tablet}{0.250 grams}[/tex]

x= 4 medicinal tablets

Finally, the number of tablets in the bottle is 4.

Learn more:

brainly.com/question/12482948?referrer=searchResults brainly.com/question/24534599https://brainly.com/question/25294910?referrer=searchResults

Can someone explain which of Newton’s Law is demonstrated in part 1 and which is demonstrated in part 2? (Picture)

Answers

Answer:

Every action has an equal and opposite reaction. If the student doesn't push, nothing moves, is one student pushes, both move which is an example of newtons third law.

Explanation:

A shark accelerates uniformly from 2.8 km/h to
32.0 km/h in 1.5 s. How large is its acceleration!

Answers

Answer:  Initial Velocity = 2.8 km/h

Final Velocity = 32 km/h

Explanation:

Which scenario is an example of the transfer of thermal energy by
convection?
A. A person uses a hot iron to remove wrinkles from a shirt.
B. You warm your feet in front of a fireplace.
C. A cup heats up when you pour hot water into it.
D. Warm air in a hot air balloon rises and heats air at the top of the
balloon.

Answers

I think it would be, D. Warm air in a hot air balloon rises and heats air at the top of the  balloon.

The scenario that represents an example of the transfer of thermal energy by convection is the warm air in a hot air balloon rises and heats air at the top of the balloon. Thus, the correct option for this question is D.

What is Convection?

Convection may be defined as a type of process through which heat is significantly transferred by the movement of a heated fluid such as air or water. It involves the transfer of heat by the movement of a fluid (liquid or gas) between areas of different temperatures.

Thermal energy refers to the energy which is contained within a system that is responsible for its temperature. Heat is the flow of thermal energy.

This thermal energy gets transferred through the process of convection from the top of the balloon in an example of a hot air balloon. The concept of this works on the warm air that is filled in a balloon and this warm air rises and heats air at the top of the balloon.

Therefore, the correct option for this question is D.

To learn more about Convection, refer to the link:

https://brainly.com/question/9382711

#SPJ5

Andrew plays trumpet in the concert band. He holds the trumpet still at his side until it is time for him to play. When it is time, he brings the trumpet up to his mouth and starts to play. Which statement correctly connects the motion of the trumpet with Newton’s first law of motion?

Answers

When his instrument is at rest on his lap also to help maybe look into Newton’s law and write down the three main laws on flash cards

Answer:

Explanation:

I really don’t know

Johnny often hits his brother even though his brother does not do anything to the tag and eyes assume Johnny aggression is more like most likely due to a combination of

Answers

Anger? I’m not really sure what the question is or the subject like professional communication

Q. If space is vaccumed then how moon is attracted to earth by it gravity?​

Answers

Answer:

The vacuum of outer space is not caused by the expansion of the universe, but is caused by gravity.

Explanation:

Other Questions
Can anyone answer this its due in 5 minutes add the sum of 296 and 173 to their difference ILL MARK BRAINLIST FRIST ANSWERFry remembered a curious adhesive a strong and yet easily removed unglue that Spencer Silver . . . had come upon several years earlier. . . . Silver felt the unusual adhesive might have some commercial value. . . . At the time, no one had come up with a use for it, and so the formula for the weak adhesive was filed away until the Monday morning when Fry came to work with the idea of making sticky bookmarks that could also be removed.The Evolution of Useful Things,Henry PetroskiWhen did Spencer Silver discover the formula for the unglue?A. several years before Fry had his ideaB. the year before Fry had his ideaC. at the same time Fry had his ideaD. soon after Fry had his idea The product of 7 and a number is greater than 42. If thenumber is a whole number less than 10, what could the numberbe? 5Select the correct answer.What effect did the Great Awakening have on the American colonies?A. The Great Awakening caused a split in American Protestantism in the American colonies.OB. The Great Awakening intensified racial and gender bias in the American colonies.C. The Great Awakening diminished the importance of education in the American colonies.D. The Great Awakening resulted in public displays of overt emotion in the American colonies.ResetNext Evaluate the function, f(m) = 13 - 3m, when m is 4 f(4) = Which statement best describes how to predict the formula of a stable ionic compound? Use the same number of cations as anions so that the compound is neutral. Use more cations than anions so that the compound is positively charged. Use enough cations and anions so that the total charge is zero. Use fewer cations than anions so that the compound is negatively charged.IT's C Which of the following is a direct effect of tectonic plate movement? A) The distribution of biomes in a given area B) Seasonal changes in global weather patterns C)The topography of a mountainous region D) The average precipitation that an area receives what is the value of x in the equation 2/3(6x-9)=2(x+12) 3/8 divided by 2/5?? WILL GIVE BRAINLIEST If a triangle is acute, then all three angles have a measure of 60. Provide a counterexample to show that the statement is false. A) The three angles could be 30, 30, and 30 B) The three angles could be 30, 60, and 90 C) The three angles could be 30, 70, and 80 D) The three angles could be 30, 30, and 120 80m15 + 72m12 32m10 A mini-fridge is priced at $225. There is a 6% salestax rate. What is the sales tax for the mini-fridge indollars and cents? Write an equation for the line parallel to g(x) = 4x + 5 and passing through the point (10,7). Write the answer in slope-interceptform. / Looks up author of selected booksimport java.util.*;class DebugNine1{public static void main(String[] args){Scanner input = new Scanner(System.in);String[][] books = new String[6][2];books[0][0] = "Ulysses";books[0][1] = "James Joyce";books[1][0] = "Lolita"books[1][1] = "Vladimir Nabokov";books[2][1] = "Huckleberry Finn";books[2][1] = "Mark Twain";books[3][0] = "Great Gatsby";books[3][2] = "F. Scott Fitzgerald";books[4][0] = "1984";books[4][1] = "George Orwell";books[5][5] = "Sound and the Fury";books[5][1] = "William Faulkner";String entry,shortEntry,message ="Enter the first three characters of a book title omitting \"A\" or \"The\" ";int num, x;boolean isFound = true;while(!isFound){System.out.println(message);entry = input.next();shortEntry = entry.substring(0,3);for(x = 0; x < books.length; ++x)if(books[x][0].startsWith(shortEntry)){isFound = true;System.out.println(books[x][x] + " was written by " + books[x][1]);x = books.length;}if(isFound)System.out.println("Sorry - no such book in our database);}}} What is the slope of a line parallel to the line whose equation is 2x + y = 3. Fullyreduce your answer. what is 96 divided by 4 Summarize the battle of pea ridge and its outcome? 1.64 as a mixed number in simplest form. Estimate the chronic daily intake of toluene from exposure to a city water supply that contains a toluene concentration equal to the drinking water standard of 1 mg L1. Assume the exposed individual is an adult female who consumes water at the adult rate for 70 years, that she abhors swimming, and that she takes a long (20 minute) bath every day. Assume that the average air concentration of toluene during the bath is 1 g m3. Assume the dermal uptake from water (PC) is 9.0 106 m h1 and that direct dermal absorption during bathing is no more than 80% of the available toluene because she is not completely submerged. Use the EPA lifetime exposure of 75 years.