a train has an initial velocity of 44m/s and an accelaration of _4m/s calculate its velocity​

Answers

Answer 1

Answer:

It's 4m/s

Explanation:

V = u _ at, at u = 44m/s

44 + [-4]10

4m/s


Related Questions

velocity of sound in solid is more than that in liquid.why?​

Answers

Velocity of sound travels faster in solids than in liquids, and faster in liquids than in gases because "the density of solids is higher than that of liquids, meaning that the particles are closer together."

Answer:

Explanation:

Due to the fact that sound is caused by vibrations, it's more noticeable in liquid because the vibrations may cause ripples in the liquid

You fill a car with gasoline. The car now has... ( what energy)

Answers

Answer:

Chemical Potential Energy Energy

Energy is the capacity for doing work or supplying heat. When you fill your car with gasoline, you are providing it with potential energy. Chemical potential energy is the energy stored in the chemical bonds of a substance.J

Explanation:

The PE of the box that is on a 2.0 m high self is 1600 J. What is the power expelled to lift the box to this height in 10.0 seconds?

Answers

Answer:

  160 W

Explanation:

Power is the ratio of work to time:

  (1600 J)/(10 s) = 160 J/s = 160 W

An electromagnetic wave moves through electric and magnetic fields. What
is the relationship between the wave and the fields?
O A. The vibrations of the fields are in the same direction but
perpendicular to the motion of the wave.
B. The vibrations of the fields are at 90° angles to the direction of
motion of the wave.
C. The vibrations of the fields and wave motion are all parallel to
each other.
D. The vibrations of the fields and the wave motion are at 180°
angles to each other.

Answers

Answer:

B. The vibrations of the fields are at 90° angles to the direction of

motion of the wave.

Explanation:

Electromagnetic waves are waves that are produced by the vibration of the electric and magnetic fields.

Both fields are oriented perpendicularly to one another. This vibration produces the electromagnetic waves.

These waves are very unique in that they do not require any material medium for propagation.

There is a broad spectrum of electromagnetic waves with gamma rays being the most energetic and radio waves being the least energetic.

Answer: B is the correct answer

Explanation:

What is the same about a particle as gas, liquid, or solid?
A. The speed at which the particles move.
B. The volume that the substance takes up.
C. The chemical composition.
D. The temperature of the substance.

Answers

I am pretty sure the answer is c using process of elimination.

The thing same about a particle as gas, liquid, or solid is its chemical composition.

What are states of matter?

Matter exists in three different states: solid, liquid, and gas. By examining the configuration of their particles, it is possible to understand why they have various qualities. Theoretically, at this temperature, particles move slowly and have the least amount of energy.

Phase refers to the material's actual state. To pay attention to is the word physical. Only physical means can change the state of matter. You can make a physical change if energy is added (by raising the temperature) or subtracted (by freezing things).

The chemical composition of matter same about a particle as gas, liquid or solid.

To learn more about states of matter refer to the link:

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which of the following is an example of thermal energy being transferred directly from one substance to another via conduction?

Answers

Answer:I think it’s D

Explanation:

Conduction needs direct touch to transfer

•1. Identify the four inner/terrestrial planets.

Answers

Answer:

1) Mercury

2) Venus

3) Earth

4) Mars

Explanation:

Answer:

The for inner/terrestrial planets are Mercury, Venus, Earth and Mars

Explanation:

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                           Have a nice day and I hope it helps!

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Will mark brainliest Why are acoustic panels are used in concert halls

Answers

Because The walls of the concert halls are used to control the acoustic. Hard surfaces will reflect the sound and you'll find lots of these in concert halls – while soft surfaces will absorb it.

Answer:

what person above said is correct

Explanation:

The walls of the concert halls are used to control the acoustic. ... Rough surfaces can also be used to disperse sound in all directions – this might be used in concert halls to get rid of echoes that would distract from performances.

An acoustic panel is a sound-absorbing panel used to mitigate noise and reduce the reverberation and echo in a space. For both types, we can talk about different principles of good acoustics: absorption, diffusion, and attenuation. These are all linked to the acoustic performance of the panels.

brainliest?

2) Ariel dropped a golf ball from her second story window. The ball starts from rest and hits the sidewalk 1.5 s later with a velocity of 14.7 m/s. Find the average acceleration of the golf ball.1.5x14.7 =22.05

Answers

Answer:

Acceleration = 9.8m/s²

Explanation:

Given the following data;

Initial velocity = 0m/s (since it's starting from rest).

Final velocity, v = 14.7m/s

Time, t = 1.5 seconds.

To find acceleration;

In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.

This simply means that, acceleration is given by the subtraction of initial velocity from the final velocity all over time.

Hence, if we subtract the initial velocity from the final velocity and divide that by the time, we can calculate an object’s acceleration.

Mathematically, acceleration is given by the equation;

[tex]Acceleration (a) = \frac{final \; velocity - initial \; velocity}{time}[/tex]

[tex]Acceleration = \frac{v - u}{t}[/tex]

Substituting into the equation, we have;

[tex]Acceleration = \frac{14.7 - 0}{1.5}[/tex]

[tex]Acceleration = \frac{14.7}{1.5}[/tex]

Acceleration = 9.8m/s²

Therefore, the average acceleration of the golf ball is 9.8m/s².

A spaceship is traveling at 24,000 m/sec. At T=5 sec, the rocket trusts are turned on. At T=55 sec, the spaceship reaches a speed of 29,500 m/sec. Whats the spaceships acceleration?

Answers

Answer:

480m/s²

Explanation:

Acceleration is the change in velocity of a body with respect to time;

Acceleration = change in velocity/change in time

change in velocity = 29,500 - 24,000

change in velocity= 5,500

Change in time = 55 - 5

change in time = 50secs

Substitute into the formula;

spaceships acceleration = 24000/50

spaceships acceleration = 480 m/s²

Hence the spaceships acceleration is 480m/s²

A horizontal pole is attached to the side of a building. There is a pivot P at the wall and a chain is connected from the end of the pole to a point higher up the wall. There is a tension force F in the chain. What is the moment of the force F about the pivot P?

Answers

Answer:

Fscos63

Explanation:

Given that a horizontal pole is attached to the side of a building. There is a pivot P at the wall and a chain is connected from the end of the pole to a point higher up the wall. There is a tension force F in the chain. What is the moment of the force F about the pivot P?

Taking the moment from the pivot point P, that means the moment at point p = 0

Then, if we consider the weight mg of the pole, according to the principle of equilibrium : sum of the upward forces equal to the sum of the downward forces.

Therefore, mg = Fsinø ....... (1)

Also, taking moment at point P

Let the length of the pole = s

The length of the weight of the pole = 1/2 S

Fscosø = mgs/2

The distance s will cancel out

2Fcosø = mg ...... (3)

Substitute mg in equation 1 into equation 3

2fcosø = fsinø

F will cancel out

Tanø = 2

Ø = tan^-1(2)

Ø = 63.4 degree

The moment of force F about pivot point P will be

Moment = force × distance

Moment = Fcos63 × S

Moment = Fscos63

What is Earth's primary source of radiant energy?

Answers

Answer:

the sun?

Explanation:

Answer:

the sun

Explanation:

A dog playing fetch starts at rest and accelerates at 4.5m/s2 north. It takes the dog 7 seconds to catch the ball. What was the speed of the dog when he caught the ball?

Answers

Answer:

31.5m/s

Explanation:

Given the following

acceleration a = 4.5m/s²

Time t= 7secs

Required

Final speed v = ?

Using the equation of motion

v = u+at

v = 0+4.5(7)

v = 31.5m/s

Hence the speed of the dog is 31.5m/s

please help will give brainlyest

Answers

16.34 km/2.34 h = 6.98 km/h

A piece of glass weights 25 g in air, 16.77g in water at 4C and 16.89g in water at 60C. Find the mean coefficient of cubical expansion of water between 4C anf 60C, taking the coefficient of linear expansion of glass as 8*10^6​

Answers

sorry i think so i dont exactly know i am sorry

Explanation:

As a certain amount of water is cooled from room temperature until it reaches 4 °C, its volume drops. The density reduces as the volume increases below 4 °C. Therefore, water's greatest density occurs at 4 degrees Celsius.

What coefficient of cubical expansion of water?

Water has an unusual trait called anomalous expansion, which causes it to enlarge rather than compress when the temperature drops from 4 °C to 0 °C, and it becomes less dense.

At temperatures not far below zero degrees Celsius, water ice is unique for having low coefficients of static and dynamic friction that range from 0.04-0.02, but as the temperature drops, these numbers rise.

Therefore, When a metal sheet's temperature rises by one degree, its coefficient of area expansion is calculated as the increase in surface area per unit of original surface area.

Learn more about coefficient here:

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A plane flew at a speed of 600 km/hr for a distance of 1500 km,
How long did take to get to its destination

Answers

Explanation:

600 ÷ 60 = 10

1500 ÷ 10 = 150 minutes

I don't know how you should express the answer in:

So it's either 150 minutes or 2 hours and 30 minutes.

(This is kind of like mathematics, not physics)

10.
A simple pendulum set into vibration
completes an oscillation in time T. If
the length of the pendulum is
increased to 9 times its original
length, the new period of oscillation in
terms of T will be
А. 18.0 T
B. 9.0 T.
C. 4.5 T.
D 3.0 T
E. 0.1 T.​

Answers

Answer:

The new period of oscillation is D) 3.0 T

Explanation:

Simple Pendulum

A simple pendulum is a mechanical arrangement that describes periodic motion. The simple pendulum is made of a small bob of mass 'm' suspended by a thin inextensible string.

The period of a simple pendulum is given by

[tex]T=2\pi \sqrt{\frac{L}{g}}[/tex]

Where L is its length and g is the local acceleration of gravity.

If the length of the pendulum was increased to 9 times (L'=9L), the new period of oscillation will be:

[tex]T'=2\pi \sqrt{\frac{L'}{g}}[/tex]

[tex]T'=2\pi \sqrt{\frac{9L}{g}}[/tex]

Taking out the square root of 9 (3):

[tex]T'=3*2\pi \sqrt{\frac{L}{g}}[/tex]

Substituting the original T:

[tex]T'=3*T[/tex]

The new period of oscillation is D) 3.0 T

I need the answers ASAP.

Answers

Answer:

Explanation:

A) Large: As she opens her parachute, she begins to displace a large volume of air. This leads to a Large air resistance

B) increase, weight: As she falls, the air resistance force increases. Now there is a force acting in opposite directions to her weight.

C)Weight, Decelerate: The skydiver has only the downward force of her weight pulling down on her, so she starts to decelerate

D) Weight, Upward, Resultant:

Her weight is now equal to the upward force from the ground. Her resultant  force is then zero

E) Increases, same, constant,  resultant, terminal:

As she accelerates faster, the air resistance force increases. It is now the same as her weight. She now moves at a constant speed because the resultant force acting on her is zero. She is now at her terminal velocity.

F) Increases, same, constant, terminal:

As she decelerates, the air resistance force on her parachute increases until it is the same as her weight. She is now moving with a constant speed until she hits the ground - a new slower terminal velocity

Body Systems Directly Involved (Give at Least 2)
Cartoon
13. Ouch! You step on a tack and jump away without even thinking. Then you decide to pick up the tack and place it back in a desk drawer.
I need the second one the nervous system and...

Answers

Answer:

Nervous system and immune system

Explanation:

The nervous system is involved because you immediately jumped away, that ur brain and nerves initiating the fight or flight response. The immune system is involved because the tack most likely pierced your skin, so your immune system needs to work to make sure the wound does not get infected.

What is the volume of a liquid in a 50 mL cup?
A. 50mL
B. 10mL
C. There is not enough information to answer this question.

Answers

Answer:

there is not enough information

How far will a car travel in 30 seconds at 12 m/s​

Answers

Answer:

30*12=360m,it would travel 360 m.

360m hope this helps

A scientist uses different types of gasoline in the engines of three identical
cars. She measures how far the cars go before running out of gas. What is
the controlled variable in this experiment?
A. The type of gas the cars are given
B. The distance the cars go
C. The amount of gas the cars are given
D. The type of cars that are used

Answers

Answer:

the types of gas the car is given

Explanation:

All three cars are identical and have different gas in each car so she is trying to determine how each car will react with different gasoline.

a car has a mass of 1200 kg. what would be its weight on earth?

Answers

Answer:

11772 N

Explanation:

[tex]\boxed{w = mg}[/tex]

w= weight

m= mass

g= acceleration due to gravity

The acceleration due to gravity on earth is 9.81m/s².

Substitute m= 1200 and g= 9.81 into the formula:

w= 1200(9.81)

w= 11772 N

remember since they are asking the weight there is always gravity its 9.8m/s but approximately its 10m/s

define specific heat capacity

Answers

the heat required to raise the temperature of the unit mass of a given substance by a given amount (usually one degree).

A mass of 2.8 kg lies on a frictionless table,
pulled by another mass of 4.9 kg under the
influence of Earth's gravity.
The acceleration of gravity is 9.8 m/s2.
2.8 kg
4.9 kg
What is the magnitude of the acceleration
a of the two masses?
Answer in units of m/s2.

Answers

Answer:

17.15 m/s²

Explanation:

The formula for force is ;

F= m*a   where m is mass of object 1 and a is acceleration due to gravity

The force, F , used in pulling the mass is ;

4.9 * 9.8 =48.02 N

Applying the formula for force to get acceleration

F= m*a

48.02 = 2.8 * a

a= 48.02 / 2.8

a= 17.15 m/s²

.A water tank has dimensions
of 6m x 4m x 4m. Find the pressure exerted by
water at the base of dam when it is half
filled. ( Density of water - 1000 kg/ m2,
acceleration
due to to gravity is 9.8m/s2

Answers

Answer:

9800Nm⁻²

Explanation:

Given parameters:

Dimensions of the water tank = 6m x 4m x 4m

Density of water  = 1000kgm⁻³

Gravity  = 9.8m/s²  

Unknown:

Pressure exerted by the water at the base of the dam  = ?

Solution:

The pressure exerted by the water is given as:

  Pressure  = density of water x acceleration due to gravity x height of water

The height of the water here is half = 1m

   

Pressure  = 1000 x 9.8 x 1 = 9800Nm⁻²

A box weighs 1300 N. When a horizontal force of 390 N has applied the box accelerates at 1.3 m/s2. What is the magnitude of the frictional force?

Answers

Answer:

Ffriction = 217.7[N]

Explanation:

First, we must find the mass of the box, we must remember that the weight is defined as the product of the mass by acceleration.

[tex]w=m*g[/tex]

where:

w = weight [N] (units of Newtons)

m = mass [kg]

g = gravity acceleration = 9.81 [m/s²]

[tex]1300=m*9.81\\m=132.51[kg][/tex]

Now we must use Newton's second law, which tells us that the sum of forces is equal to the product of mass by acceleration.

∑F = m*a

where:

∑F sum of forces

m = mass = 132.51[kg]

a = acceleration = 1.3[m/s²]

We must know that the forces that act are the horizontal force that moves the box and the friction force in the negative direction that acts against the movement.

Now replacing:

[tex]390-f_{friction}=132.51*1.3\\390-172.26=f_{friction}\\f_{friction}=217.7[N][/tex]

The radius of a planet is 2400 km, and the acceleration due to gravity at its surface is 3.6 m/s2.
What is the mass of the planet?

Answers

Answer:

[tex]3.1\cdot10^{23}\:\mathrm{kg}[/tex]

Explanation:

We can use Newton's Universal Law of Gravitation to solve this problem:

[tex]g_P=G\frac{m}{r^2}[/tex]., where [tex]g_P[/tex] is acceleration due to gravity at the planet's surface, [tex]G[/tex] is gravitational constant [tex]6.67\cdot 10^{-11}[/tex], [tex]m[/tex] is the mass of the planet, and [tex]r[/tex] is the radius of the planet.

Since acceleration due to gravity is given as [tex]m/s^2[/tex], our radius should be meters. Therefore, convert [tex]2400[/tex] kilometers to meters:

[tex]2400\:\mathrm{km}=2,400,000\:\mathrm{m}[/tex].

Now plugging in our values, we get:

[tex]3.6=6.67\cdot10^{-11}\frac{m}{(2,400,000)^2}[/tex],

Solving for [tex]m[/tex]:

[tex]m=\frac{2,400,000^2\cdot3.6}{6.67\cdot 10^{-11}},\\m=\fbox{$3.1\cdot10^{23}\:\mathrm{kg}$}[/tex].

If Bert the Bat travels East at 200 meters in 10 seconds, what is his velocity?

Answers

Answer:

20m/s due east

Explanation:

Given parameters:

Displacement eastward  = 200m

Time  = 10s

Unknown:

Velocity  = ?

Solution:

Velocity is the displacement divided by time;

    Velocity  = [tex]\frac{displacement}{time}[/tex]  

 Velocity  = [tex]\frac{200}{10}[/tex]    = 20m/s due east

1) Which of the following is not a type of energy?
A: Thermal
B: Potential
C: Kinetic
D: Frictional

Answers

D. Frictional

The other three are energies while frictional energy is not
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What is the mental and physical effort made by humans for the production of goods and services?LaborCapitalLandEntrepreneurship Comment with your agreement or disagreement (and why) on the following quote; include in your answer a discussion of what the CEOs role should be in setting ethical standards and in enforcing ethical behavior: ""Value statements serve as a cornerstone for culture building; a code of ethics serves as a cornerstone for developing a corporate conscience."" Create your own game ideasI need help on creating my own game. Can anyone give me any ideas? I present this tomorrow. Respond ASAP. Identify the common denominator that could be found by multiplying the denominators of 1/3 and 5/6 ?1895None of these is correct. Choose the correct indefinite article (ways to say a/an, some/few).___________ dormitorios tienen baos, pero mi dormitorio no tiene.Your answer:UnUnaUnosUnas What type of figurative language is "make merry myself?" *alliterationpunonomatopoiea Which county is at approximately 34 degrees latitude?A)BurkeB)ElbertC)PutnamD)Rabun open a bank account make a deposit $150 what type of endoplasmic reticulum is involved in protein synthesis? help!! geometryjjjjjjjjjjjjj Please please help! PLZ ANSWER (about JFK)In lesson 5.02, you learned that a counterclaim is the statement of the reasons people might disagree with the claim.Does Kennedy mention a counterclaim? If so, how does he prove the counterclaim wrong or weaken it? Use evidence from the text to support your answer if you found a counterclaim. Your family is moving to a new neighborhood, and your parents have narrowed their choices down to four different places. Because you have a new-found interest in wellness and in keeping your mind sharp, your family has asked your opinion about which neighborhood to choose. Your biggest concerns are that you have a safe place to go study and that you have access to regular cultural events. Look at the breakdown of each option and pick the best one for your family:Neighborhood A: Police and fire stations, festivalsNeighborhood B: Library, weekly farmers' market, parkNeighborhood C: Museums, health fairs, libraryNeighborhood D: Support groups, library, parkWhich is the best neighborhood to meet your needs? (3 points) aNeighborhood A bNeighborhood B cNeighborhood C dNeighborhood D Use your choice of equal values, substitution, or elimination to solve thefollowing System of Equations, and show your work.i are running a concession stand at a basketball game. You are selling hotdogs and sodas. Each hot dog costs $3.00 and each soda costs $2.00. At theend of the night you made a total of $213.00. You sold a total of 87 hot dogsand sodas combined. You must report the number of hot dogs sold and thenumber of sodas sold. How many hot dogs were sold and how many sodaswere sold? Imagine that you are a scientist who has discovered a new object. You want to find out if the object is biotic or abiotic. You observe several characteristics about the new object. Which of these characteristics would tell you that the object is abiotic, or not alive? Please help worth lot of points What are the advantages of offspring (babies) that are derived from Asexual reproduction? Sulfur dioxide (SO2) is an unwelcome resultof burning soft coal in power plants. Someof the SO2 ends up as sulfuric acid in acidprecipitation. The net reaction is2 SO2(g) + O2(g) + 2 H2O(l) 2 H2SO4(l)What mass in grams of SO2 is needed toreact with 1771 g of O2?Answer in units of g. Michael wants to earn more than $42 trimming trees. He charges $8 per hour and pays $6 in equipment fees. What are the possible numbers of hours Michael could trim trees? Use t for the number of hours. Write your answer as an inequality solved for t. Romantic literature dominated American arts and letters up until the end of the 19th century. In "Fenimore Cooper's Literary Offences" Twain discusses how Cooper's writing fails because Cooper's writing focuses more on imagination than on any sort of logic or realistic depictions.How does Twain avoid these "literary offences" in "The Celebrated Jumping Frog of Calaveras County" and why is this avoidance significant?