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
mel-nik [20]
2 years ago
12

A car on the roller coaster begins with 0j of kinetic energy and 12,928j of potential energy and finishes the track with 3,715j

of potential energy. How much kinetic energy dose the car finish with????
Physics
1 answer:
andre [41]2 years ago
7 0

Answer:

9213 J

Explanation:

Change in Kinetic energy = Change in Potential energy

= 12,928J - 3715J

=9213 J

For more assistance: +1 (304) 223-3136

You might be interested in
Which electromagnetic waves have the shortest wavelength and the highest frequency? _________ waves
Ivan

Answer:

Gamma waves

Explanation:

7 0
3 years ago
Read 2 more answers
The strength of the force of friction depends on which two factors?
Stolb23 [73]

Options A and D are correct. The strength of the force of friction depends on the objects' sizes and weights and the heat generated by the friction and the types of surfaces involved.

<h3 /><h3>What is the friction force?</h3>

It is a type of opposition force acting on the surface of the body that tries to oppose the motion of the body. its unit is Newton (N).

Mathematically, it is defined as the product of the coefficient of friction and normal reaction.

On resolving the given force and acceleration in the different components and balancing the equation gets. Components in the x-direction.

The strength of the force of friction depends on the two factors, as;

A. The objects' sizes and weights.

D. The heat generated by the friction and the types of surfaces involved.

Hence, options A and D are correct.

To learn more about the friction force, refer to the link;

brainly.com/question/1714663

#SPJ1

3 0
2 years ago
What speed would a fly with a mass of 0.55g need in order to have a kinetic energy of 7.6 •10^4 j?
masya89 [10]

Answer:

16613 m/s

Explanation:

Given that

mass of the fly, m = 0.55 g = 0.55*10^-3 kg

Kinetic Energy of the fly, E = 7.6*10^4 J

Speed of the fly, v = ? m/s

We know that the Kinetic Energy is that energy that an object, in this case, the fly, possesses due to its motion.

The Kinetic Energy, KE of any object is represented by the formula

KE = 1/2 * m * v²

If we substitute the values in the relation, we have,

7.6*10^4 = 1/2 * 0.55*10^-3 * v²

v² = (15.2*10^4) / 0.55*10^-3

v² = 2.76*10^8

v = √2.76*10^8

v = 16613 m/s

Thus, the fly would need a speed of 16.6 km/s in order to have a Kinetic Energy of 7.6*10^4 J

7 0
3 years ago
Two blocks of masses m and 3m are placed on a frictionless, horizontal surface. A light spring is attached to the more massive b
ivanzaharov [21]

Answer:

Explanation:

a ) Conservation of momentum is followed

m₁ v₁  = m₂ v₂

3m x 2 = m  v

v = 6 m/s

Total kinetic energy

= 1/2 x .35 x 6 ² + 1/2 x 1.05 x 2 ²

= 8.4 J

This energy must be stored as elastic energy in the spring which was released as kinetic energy on burning the cord.

Yes , the conservation of momentum will be followed  in the bursting apart process. Only internal forces have been involved in the process. Two equal and opposite internal forces are created by spring which creates motion and generates kinetic energy.

4 0
2 years ago
A reaction where the consequences of a reaction cause a succeeding like reaction is called a mass reaction .
Mumz [18]

Answer:

not 100% sure what you were asking.

Explanation:

A reaction where the consequences of a reaction cause a succeeding like reaction is called a <u>chain reaction</u>.

3 0
3 years ago
Other questions:
  • How many arcseconds are in 6 degrees?<br> A) 6<br> B) 360<br> C) 3,600<br> D) 21,600
    7·1 answer
  • In the author's opinion, why is attitude the most important fitness level factor to consider? (
    10·1 answer
  • A temperature of 34 fereheight is equal to blank kelvin
    12·2 answers
  • If Zack has a mass of 80 kg calculate his weight on Earth. Please show work, thank you!
    11·1 answer
  • When magnesium fluoride reacts with iodine, the products are fluorine and magnesium iodide. What would the equation be?
    15·1 answer
  • Second and third class levers both have __________.
    7·2 answers
  • How come the arrow points the other direction when we look at it through a glass of water?
    14·1 answer
  • Which of the following statements about infrared telescopes is NOT true?
    5·1 answer
  • What is a wave in sound and light
    9·2 answers
  • Which of the following is not part of the control system? steering wheel exhaust pipe brake accelerator
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!