The first hill of a roller coaster is 42.0 meters high. The bottom of the first hill is 4.2 meters off the ground.The roller coaster cart has a mass of 4500 kg.
Calculate its potential energy at the top of the first hill.





Calculate its potential energy at the bottom of the first hill.





Challenge- What is the velocity of the cart at the bottom of the first hill?

Answers

Answer 1

Answer:

1.89*10⁶J

Explanation:

because 4500kg * 42m*10m/s² is 1890000J


Related Questions

Please answer correctly.
Will give the brainliest !!!
Urgent !!!
Please help !!

Answers

force magnetic field a torque dynometer ---

The efficiency of a motor is 15%. The student calculated the useful output energy transfer is 1.20J. Calculate the total input energy transfer.

Answers

Answer:

[tex]8.0\; \rm J[/tex].

Explanation:

The efficiency of a machine is the ratio between the useful output and the energy input:

[tex]\begin{aligned}\text{efficiency} &= \frac{\text{useful output}}{\text{energy input}} \times 100\%\end{aligned}[/tex]

Rearrange this equation to find energy input in terms of efficiency and useful output:

[tex]\displaystyle \text{energy input} = \frac{\text{useful output}}{\text{efficiency} / (100\%)}[/tex].

Substitute in the values: [tex]\text{useful output} = 1.2\; \rm J[/tex] and [tex]\text{efficiency} = 15\%[/tex]. Evaluate to find the value of [tex]\text{energy input}[/tex]:

[tex]\begin{aligned} \text{energy input} &= \frac{\text{useful output}}{\text{efficiency} / (100\%)} \\ &= \frac{1.20\; \rm J}{15\% / (100\%)} \\ &= 8.0\; \rm J\end{aligned}[/tex].

(Rounded to two significant figures as in the value of efficiency.)

Please I need help fast <3

Answers

Answer:

Where is the picture send again please

Explanation:

The ______ of Saturn vary in thickness and are composed of icy chunks ranging in size from sand to boulders (and even larger).

Answers

Answer:

"rings" - viewed from a distance, Saturn appears to be surrounded by rings

Complete the following sentence. Pressure in a liquid depends on the __________ of the liquid.

Answers

Answer:

density

Explanation:

because it is directly proportional

Pressure in a liquid depends on the density of the liquid.

What is density?

Density is defined as the mass per unit volume. It is an important parameter to understand the fluid and its properties. Its unit is kg/m³.

The pressure in the liquid is;

P = ρgh

Where,

h is the height

ρ is the density

g is the acceleration due to gravity

The density of a liquid determines its pressure.

Hence, density is the correct answer.

To learn more about the density refer to the link;

https://brainly.com/question/952755

#SPJ2

NO LINKS! What are the definitions of initial horizontal velocity and initial vertical velocity? Please help! This like is my 10th time asking this question because many people have been scamming me.

Answers

Explanation:

Initial horizontal velocity

If a projectile is launched at an angle to the horizontal, then the initial velocity of the projectile has both a horizontal and a vertical component. The horizontal velocity component (vx) describes the influence of the velocity in displacing the projectile horizontally.

The initial horizontal velocity can also be determined by measuring the diameter d of the ball and dividing by the time t that it takes for the ball to move across the photogate. That is Vo = d/t.

Initial vertical velocity

Vertical velocity refers to the speed of an object's movement in a vertical direction.The initial vertical velocity is the vertical component of the initial velocity: v 0 y = v 0 sin θ 0 = ( 30.0 m / s ) sin 45 ° = 21.2 m / s .

why the speed of sound in solid and liquid is not signoficantly affected by temperature

Answers

Explanation:

because the molecules are closer together and more tightly bonded in solids

Global warming means that

Answers

Answer:

The earth is heating up.

Explanation:

This is due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth's atmosphere.

What would be the extension of the spring for a 3 N weight if the extension of the spring was 4 mm for a 50 g mass?
А 4 mm B)8 mm C)12mm D)24 mm​

Answers

Answer:

24mm

Explanation:

3 N to g is 305.9 g

50g ---- 4 mm

305.9 ----- 4×305.9/50 = 24 mm

Which of toby's answers is a correct description of what happens when a 1-kg cart traveling at 1 m/s collides inelastically with another 1-kg cart at rest?.

Answers

Answer:

hi I don't know sorry sorry forgive me

Explanation:

sorry

If you blow up a balloon, tie it off, and release it, it will fall to the ground.
Why does it fall instead of float?
NO LINKS YA FILTHY VERMINS

Answers

Answer:

carbon dioxide (what you are blowing up the balloon with) is a heavy gas. so when you fill the Balloon with it, the balloon will not float. helium is a light gas and floats. gravity takes another. part in this

choose 3 ways to keep our bodies healthy
. play in the mud
.sanitize your hands
. break a window
. eat vegies
. eat burgers
. take daily showers
. bite your arm
(i already know it)

Answers

Sanitize your hands, eat veggies, take daily showers. Hope this helped! (No explanation needed lol)



This was fun to answer.

2. If Joe rides his bicycle in a straight line for 15 min with an average velocity of 12.5 km/h south, how far has he ridden?

Answers

Answer:

3.125 Kilometers

Explanation:

To answer this you just multiply 12.5 by .25 (since 15 minutes is a quarter of an hour) to get 3.125 kilometers ridden.

please help pleaseeeeee

Answers

Answer:

25mg

Explanation:

it basically explains itself

answer question 7 please

Answers

If the only answers are kinetic and potential, then blank 1: potential, blank 2: kinetic

A block requires an applied force of 20N to begin moving it to the right. What is the maximum static friction?
a. Less than 20 N
b. Exactly 20 N
c. Just over 20 N
d.Twice as much as the block's weight

Answers

Answer:

A.

Explanation:

Thats my answer

Please make me branlies answer

A train is running at a speed of 60 m/s . what will this speed be in km/h ?​

don't answer if u don't know
spammers = reported

Answers

Speed= 60 m/s

for converting m/s to km/h =multiply with 5/18

for converting km/h to m/s= multiply with 18/5

so, 60 × ( 18/50) = 216 km/h

What is/are the difference between wavelength and spectral lines?

Answers

Answer:

Definition of spectral line: one of a series of linear images formed by a spectrograph or similar instrument and corresponding to a narrow portion of the spectrum of the radiation emitted or absorbed by a particular source.

Definition of Wavelength: can be defined as the distance between two successive crests or troughs of a wave. It is measured in the direction of the wave. ... Wavelength is inversely proportional to frequency. This means the longer the wavelength, lower the frequency.

So, the spectrum is the range of wavelength in visible light. While, wavelength is the length of a wave.

Explanation:

I hope this helps!

Which wave has the highest frequency?

Answers

Answer:

e

Explanation:

It is possible to create a wave having some frequency on a rope and then gradually it will become faster. During this time wavelength becomes shorter. Here the wave 'e' is found to has highest frequency. The correct option is E.

What is frequency of a wave?

The number of oscillations of a wave per unit time is defined as the frequency. It is usually measured in Hertz and the frequency is directly proportional to the pitch. Humans can hear sounds with frequencies ranging between 20-20000 Hz.

The sounds with frequencies over the human ears range are called the ultrasonic sound and sounds with frequencies less than the audible range are called infrasonic sound. The wavelength and frequency are inversely proportional to each other.

When wavelength increases, frequency decreases and vice versa. So here wave E has maximum number of vibrations.

Thus the correct option is E.

To know more about frequency, visit;

https://brainly.com/question/18125929

#SPJ2

PLS HURRY THIS IS DUE TODAY!!!
I WILL GIVE BRAINLIEST!!!!
NO LINKS AND NO STEALING POINTS,
PLS ANSWER IF YOU KNOW FOR SURE WHAT IT IS!!!
THE QUESTION IS IN THE PICTURE ATTACHED!

Answers

Answer:

B. between carbon and oxygen

Explanation:

formaldehyde has a carbon atom that has single bonds with two hydrogen atoms on both sides, and it has a double bond with oxygen.

Answer:

The placement of the double bond is between carbon atom and oxygen atom

this same question was for me so I did and got it correct

please mark me as brainliest

A ball is fired from a cannon at point 1 and follows the trajectory shown in the figure below. Air
resistance may be neglected. Five possible vectors are also shown in the figure; the letter E represents
the zero vector.

D
E:
C
B
a
Which vector best represents the ball's velocity at position 2?
Which vector best represents the ball's acceleration at point 2?
Which vector best represents the ball's velocity at position 3?
Which vector best represents the ball's acceleration at point 3?
du
b)
A
d)

Answers

In trajectory, acceleration vector is not the same with the velocity vector but it depends on the change in velocity. The acceleration path is perpendicular to the velocity vector path. The Correct answers are:

a.) D

b.) B

c.) C

d.) A

A Vector is a quantity that has both magnitude and direction.

Given that a  ball is fired from a cannon at point 1 and follows the trajectory shown in the figure.

a.) The vector best represents the ball's velocity at position 2 is D

b.) The vector best represents the ball's acceleration at point 2 is B

c.) Which vector best represents the ball's velocity at position 3 = C

d.) Which vector best represents the ball's acceleration at point  = A

In trajectory, acceleration vector is not the same with the velocity vector but depends on the change in velocity. The acceleration path is perpendicular to the velocity vector path.

At point 3, since the ball path is parabolic, the velocity at that point is not equal to zero but will tend to take a horizontal path.

Learn more here: https://brainly.com/question/25519989  

A narrow slit is illuminated with sodium yellow light of wavelength 598 nm. If the central maximum extends to latex: \pm30^\circ± 30 â, how wide is the slit?.

Answers

Answer:

because of the gravity of the earth

how do humans affect the lithosphere

Answers

By farming, building structure, mining and all manner of activities that change the original.

if acceleration due to gravity is 10m/s², what will be the potential energy of a body of mass 2 kg kept at a height of 5 meter ?​

Answers

Answer:

50J

Explanation:

Ep = mgh

Here,

m = 1kg; g = 10 m/s2; h = 5m

So, Ep = 1kg*10m/s2*5m

= 50J

So, the potential energy is 50J (Ans).

URGENT! 40 POINTS! For each situation below, make a model of the situation and find the work done on the box using both energy and forces.


1. A 2 kg box with some initial velocity slides up a frictionless ramp, which is at a 15ᵒ


angle to the ground, until the box comes to rest 1 second later.


2. A 2 kg box initially at rest slides down a frictionless ramp (at 15ᵒ from the ground) for


1 second.


3. A 2 kg box is thrown upward with an initial speed of 3.5 m/s. Consider the box from


the time it was thrown until it reaches its maximum height.


4. A 2 kg box is dropped from an initial height of 10 m.



I have some physics, I just don't know what formulas to use or where to start. Help is much appreciated.

Answers

Answer:

i dont know but ask your mom for help

Explanation:

some brainly things dont work so ask your mom for some help or someone you know ok

3.2.1.3.2 Practice with Work and Forces …A_K_

What does 1 N = ? please I need help?​

Answers

[tex]1~N = 1~ \text{kg~ms}{^{-2}[/tex]

1 N = 1 kg × m/s²

One Newton is equal to 1 kilogram multiplied by meter by second squared.

_____

Hope it helps ⚜

Where is the natural light display called aurora borealis located?

Answers

The natural light display called aurora borealis is located in the northern

hemisphere.

There are two types of aurora which are called aurora borealis and aurora

australis. The aurora borealis is located in the Northern hemisphere while

the aurora australis is located in the Southern hemisphere.

They receive their energy through the interaction of charged particles

on the Sun and Earth to produce the light display. An example

of the interaction involves solar wind with atoms of the upper atmosphere.

Read more on https://brainly.com/question/20191244

Answer:

northern and southern hemisphere

Explanation:

In which material does the light wave have the larger wavelength?

Answers

Answer: in the smaller/ thinner pieces.

The amount of heat that is needed to raise the temperature of 1
kg of some material by 1°C is called the of the material.
a. specific heat
b. state
c. temperature
d. charge

Answers

Answer:

a. specific heat

Explanation:

a. specific heat

A. Specific heat

Explanation:

The specific amount of heat produced to an object of specific mass is known as specific heat.


The total mass of the carts is 1000 kg. The first
drop is 77.7 m. What is the speed of the coaster
at the bottom of the hill?

Answers

Answer:41xm/s

Explanation:

Answer:41xm/s

Explanation:

I found this for you hope it helps.

Other Questions
2. The small molecules move into the? There are 13 books on a shelf. 7 of these books are new. The rest of them are used. quien es el que se encarga de tematizar o ambientar el lugar donde se ase una obra? According to the image, what do the people need? Picture of a red coat and a purple hat. 2011 Jupiterimages Corporation Nous avons besoin d'un blouson rouge et d'un chapeau violet. Nous avons besoin d'un manteau rose et d'une charpe violet. Nous avons besoin d'un rouge manteau et d'un violet chapeau. Nous avons besoin d'un manteau rouge et d'une charpe violette. Identify the number that does not belong with the other three. Explain your reasoning. negative 10 over 2, negative 13.4, square root 18, 22.7 repeating 7 please no links i just need help why we known the think we know Need help answering this question for 30 points. ! :) What does it mean for behavior to be deviant?Multiple ChoiceDeviant behavior appears highly unusual compared to other normative behaviors in a societyDeviant behavior makes an Individual uncomfortable about his or her own actionsDeviant behavior Interferes with an individual's ability to complete his or her daily tasks.Deviant behavior is behavior that a court of law deems criminally liable.ANSWER QUICKLY Bethany observes a white crystal that is cube shaped under a microscope.Based on this observation, Bethany thinks the crystal could be sodium chloride, or tablesalt. Because the crystal has an extended structure, she knows that sodium chloride isnot a molecule. Bethany uses gray and white spheres, representing the atoms insodium chloride, to make a model of the crystals most likely structure, as shown.a. Provide two reasons why the model accurately represents sodium chloride. Supportyour reasons with evidence from the model.b. Predict whether the melting point should be high or low based on the model. WILL GIVE BRAINLIEST (x + 6) in(3x + 2) in12 inThe perimeter of this triangle is___in. Why do critics call for welfare reform? Pick any number. If that number is even, divide it by 2. If it's odd, multiply it by 3 and add 1. Now repeat the process with your new number. If you keep going, you'll eventually end up at 1. Every time. Which of the following is most likely to occur at a convergent boundary?A. Mountain formationB. Sea floor spreadingC. FaultsD. Mid-Atlantic rift Read the passage on the left to answer the following questions:15) Identify shared characterization features in The Story of the Gods and The House Behind the Cedars.A) the presence of a wealthy, white male characterB) the presence of a bullied, powerless black characterC) the presence of a downtrodden and victimized femaleD) the presence of a powerful and tyrannical aristocrat An experiment is conducted examining the effects of a new type of toothpaste on reducing cavities. Individuals in the treatment condition are given the new toothpaste; individuals in the control condition are given the standard toothpaste, but are told that they're receiving the new toothpaste. At the end of the experiment, the control group participants demonstrate a slightly higher decline in cavities. This is an example of a(n):____.a. Wording bias.b. Voluntary response bias.c. Over-sampling effect.d. Placebo effect.d. Hawthorne effect. can you help me find the slope of the line? 3.find the measure of each missing angle 13. What were the immigration laws supposed to accomplish? What most distinguishes political parties from interest groups like the AFL-CIO and the National Association of Manufacturers? a. Political parties have more money than interest groups. b. Interest groups have no clear political ideology. c. Pluralists do not think interest groups are necessary for democracy to function. d. Political parties focus on multiple issues, whereas each interest group only focuses on one. e. Interest groups do not nominate candidates to run as their avowed representatives.