1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alecsey [184]
2 years ago
8

A 200 kg roller coaster car is located at the top of a hill where the height is 30 m. What is the velocity when it reaches the b

ottom of the hill?
Chemistry
2 answers:
Alex_Xolod [135]2 years ago
4 0

Answer:

d- 24.2 m/s

Explanation:

i just answered on edge

kenny6666 [7]2 years ago
3 0
Assuming there is not loss of energy due to frinction (which is an idealization), you can use the conservation of energy law in the form:


Mechanical energy at top = mechanical energy at bottom.


Mechanical energy at top = potential energy = m * g * h


Mechanical energy at bottom = kinetic energy = m * v^2 / 2


=> m *v^2 / 2 = m * g * h

=> v^2 / 2 = g * h

=> v ^2 = 2gh

=> v = √(2gh) = √(2 * 9.8 m/s^2 *30m) = 24.25 m/s


Answer: 24.25 m/s
You might be interested in
what happens when an object speeds up,slows down, or changes direction A) velocity B) time C) deceleration D) acceleration
HACTEHA [7]
Whenever the motion of an object changes . . . speeding up, or slowing down, 
or changing direction . . . that change is called "acceleration".  Acceleration is produced by force on the object.If there is no force on the object, then there is no acceleration.  That means that 
its motion doesn't change.  The object remains in constant, uniform motion . 
moving with steady speed, in a straight line.  

No force is necessary to keep an object moving, only to change its motion.
3 0
3 years ago
Read 2 more answers
Which of the following is the correct structure of 2-methyl-3-heptene
astraxan [27]

Answer:

answer d

Explanation:

methy group is in the second position while the double bond is in the third position

8 0
3 years ago
Read 2 more answers
You have a 28.2-g sample of a metal heated to 95.2°c. you drop it in a calorimeter with 100. g of water at 25.1°c. the final tem
Vlad [161]

The heat lost by the metal should be equal to the heat gained by the water. We know that the heat capacity of water is simply 4.186 J / g °C. Therefore:

100 g * 4.186 J / g °C * (31°C – 25.1°C) = 28.2 g * Cp * (95.2°C - 31°C)

<span>Cp = 1.36 J / g °C</span>

4 0
3 years ago
What is a living thing that can carry out life process by itself
9966 [12]

Answer:

All Living things

Explanation:

All living things are capable of carrying out all life processes. Some examples of such organisms are plants, animals, microorganisms (such as bacteria)

And organism too

6 0
3 years ago
Read 2 more answers
1. Oxygen<br> full electron configuration
Arada [10]

Answer:

1s^{2} 2s^{2} 2p^{4}

Explanation:

Oxygen has eight eletrons and six valence electrons, giving it the electron configuration of 1s^{2} 2s^{2} 2p^{4}.

7 0
3 years ago
Other questions:
  • Argon (Ar): [Ne]3s23p6<br><br> core electrons:__<br> valence electrons:__
    12·2 answers
  • Which of the following is a base? <br> AgO <br> Ca(OH)2 <br> HF <br> NaCl
    11·2 answers
  • Does the reaction of a main-group metal oxide in water produce an acidic solution or a basic solution? Write a balanced equation
    10·1 answer
  • Which of the following bonds is polar?<br> a) F-F<br> b) O-H<br> c) O-O<br> d) H-H
    12·1 answer
  • Most Bic lighters hold 5.0ml of liquified butane (density = 0.60 g/ml). Calculate the minimum size container you would need to "
    13·1 answer
  • Match the following:Part A1. Hydrolysis reaction: 2. Dehydration synthesis: 3. Decomposition reaction: 4. Synthesis reaction: Pa
    11·1 answer
  • Which correctly lists the three agents that must be present for cementation to occur?
    11·2 answers
  • Select True or False: The equilibrium constant for the chemical equation 2NO(g) O2(g) 2NO2(g) is two times the equilibrium const
    12·1 answer
  • A gas occupies 4.0 L of air at 1.0 atm pressure and 30.0°C. If the gas occupies 6.0 L of air at 37.0°C, what is the pressure of
    14·1 answer
  • In an exothermic reaction, the energy of the reactants is greater than the energy of
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!