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
skelet666 [1.2K]
2 years ago
10

Determine the kinetic energy of an 833.0 kg roller coaster car moving at a speed of 20.0 m/s

Chemistry
1 answer:
trasher [3.6K]2 years ago
6 0

Answer:

166,600J

Explanation:

Kinetic energy (K.E), which is the energy due to motion of a body, can be calculated by using the formula;

K.E = 1/2 × m × v²

Where;

K.E = kinetic energy (joules)

m = mass of body (kg)

v = speed or velocity (m/s)

According to this question, the mass of the roller coaster is 833.0 kg while its velocity/speed is 20.0m/s.

K.E = 1/2 × 833 × 20²

K.E = 1/2 × 833 × 400

K.E = 1/2 × 333200

K.E = 166,600

Therefore, the kinetic energy of the roller coaster car is 166,600J.

You might be interested in
What compound/element is this? <br><br> (Easy)
Karo-lina-s [1.5K]

Answer:

C₃H₆ propene

Explanation:

Find the chemical formula by adding all the carbon and then all the hydrogen together.

5 0
3 years ago
Match each term to its description. (3 points)
madreJ [45]

Answer:   Limiting reactant = 3  

                Theoretical Yield= 1

                  Excess reactant=2

Explanation:  The theoretical yield is the maximum possible mass of a product that can be made in a chemical reaction. It can be calculated from: the balanced chemical equation. the mass and relative formula mass of the limiting reactant , and. the relative formula mass of the product.

An excess reactant is a reactant present in an amount in excess of that required to combine with all of the limiting reactant. It follows that an excess reactant is one remaining in the reaction mixture once all the limiting reactant is consumed.

The limiting reagent is the reactant that is completely used up in a reaction, and thus determines when the reaction stops. From the reaction stoichiometry, the exact amount of reactant needed to react with another element can be calculated

3 0
3 years ago
Read 2 more answers
Which substance would retain the most heat for
djyliett [7]

The aluminium substances would retain the most heat for the longest period of time.

<h3>What is retaining heat?</h3>

Retaining of heat is the quantity of heat that a substance or medium can store over time or the amount of heat that a specific amount of that substance can hold in itself. Substances that store heat 'well' (for a long time) also require a long time to heat up.

Copper and aluminium have the highest thermal conductivity among the more common metals, whereas steel and bronze have the lowest. When determining the metal to utilise for a certain application, heat conductivity is a critical quality to consider.

In addition, potassium has the highest specific heat and the longest heat retention time. Polystyrene, a polymeric polymer, can retain heat for up to 11 hours. This implies it can hold heat for extended periods of time.

Hence the aluminium substances would retain the most heat for the longest period of time.

Learn more about heat retention here

brainly.com/question/1780793

#SPJ1

6 0
1 year ago
Acid rain is caused by human activity. true or false?
kolezko [41]
Acid rain is cause by human activity and pollution, therefore, this is true. 
7 0
3 years ago
Read 2 more answers
A certain red tomato has a mass of 45.6 g. A green tomato also has a mass of 45.6 g. However, when placed in water, the green to
Allisa [31]
Because the density are v/mass not mass only so the one that floats have a density less than 1 and the one that sinks have a density more than 1 {(1) is the water density}
4 0
3 years ago
Read 2 more answers
Other questions:
  • In the gizmo what light intensity in CO2 level do you think will maximize the rate photosynthesis
    15·1 answer
  • A chemical reaction can start when enough activation energy is added to the reactants. Do you think the activation energy for ch
    11·2 answers
  • Which list includes 3 types of chemical reactions
    6·1 answer
  • Hydrogen gas can be produced by reacting aluminum with sulfuric acid. how many moles of sulfuric acid are needed to completely r
    13·2 answers
  • Using the trend for chlorine, create a rule for naming halogen oxyacids.
    6·1 answer
  • Substituents on an aromatic ring can have several effects on electrophilic aromatic substitution reactions. Substituents can act
    8·1 answer
  • describe the relationship between the age of the rocks and their distance from the mid ocean ridge, please look at the picture t
    11·1 answer
  • PLZ Help i need to turn it in before Friday ​
    14·1 answer
  • Which of the following is NOT an example of an exact number?
    7·2 answers
  • Are the atoms really "sharing" electrons? Explain.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!