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
chubhunter [2.5K]
3 years ago
8

Which of the following statements about energy is true? I. Kinetic energy cannot be transformed into another type of energy. II.

Kinetic energy can be transformed into potential energy. III. Potential energy can be transformed into kinetic energy. IV. Potential energy cannot be transformed into another type of energy. A. II and IV only B. II and III only C. I and IV only D. I and III only
Physics
2 answers:
Mashcka [7]3 years ago
8 0

Answer: B. II and III only

Explanation:

Let’s begin by explianing what energy is: the ability of matter to produce work in the form of movement, light, heat, among others. In this sense, there are several types of energy, but we will talk especifically in this case about <u>kinetic energy</u> and <u>potential energy</u>.

<u>Kinetic energy </u>is the energy an object or body has due to its movement and depends on the mass and velocity of the object or body.

To understande it better: If an object is at rest, its velocity is null and it does not have kinetic energy, however, if the object is moving, then it has kinetic energy.

On the other hand, <u>Potential energy</u> is known as <em>“stored energy”</em> that has the potential to be converted into energy of motion (kinetic energy) or another type of energy (thermal energy, for example). In addition, this energy is related to the work done when a certain force moves an object or body from its natural resting state along a distance to a new position.

So, according to this, Kinetic energy can be transformed into potential energy and Potential energy can be transformed into kinetic energy or any other type of energy. Hence, options II and III are correct.

Anarel [89]3 years ago
4 0

Answer:

B. II and III only

Explanation:

Energy can be transformed from one type to another, because there are many different types of energy.

In this case we are talking about <u>kinetic energy and potential energy</u>.

  • Potential energy is the energy that an object has due to its position or its height above the ground.
  • And kinetic energy is the energy that a moving object has (an object with a speed).

So<u> it is possible that the kinetic energy is converted into potential energy </u>(for example when a ball is thrown upwards, the more it rises it has less kinetic energy but it has more potential energy)

and it<u> is also possible that the potential energy is converted into kinetic energy </u>(if that same ball is dropped from a certain height, when it falls it losses potential energy because it loses height but gains potential energy)

-------

So

II. Kinetic energy can be transformed into potential energy

and

III. Potential energy can be transformed into kinetic energy.

are true.

which is option B. II and III only

You might be interested in
27 degrees to kelvin, 20 dg to milligrams, and 3 to decimeters.
Gala2k [10]
K = C + 273, so 27°C = 27+273 = 300 K

1 dg = 100 mg, so 20 dg = 20×100 = 2,000 mg
7 0
3 years ago
Which of the following statements is true about the scientific process?
KiRa [710]
The best and most correct answer among the choices provided by your question is the third choice or letter C.
<span>The statement "Your hypothesis must be testable." is true about the scientific process.


</span>I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
4 0
2 years ago
At the local swimming hole, a favorite trick is to run horizontally off a cliff that is 8.0 m above the water. One diver runs of
Alika [10]

Answer:

Number of revolutions=1.532 revolutions

Explanation:

Given data

Distance s=8.0 m

Angular speed a=1.2 rev/s

To find

Number of revolutions

Solution

From the equation of simple motion we not that

S=ut+1/2gt^{2}\\ where\\u=0\\So\\8.0m=0+(1/2)(9.8m/s^{2} )t^{2}\\ t^{2}=\frac{8.0m}{0.5*9.8m/s^{2} } \\ t^{2}=1.63\\t=\sqrt{1.63} \\t=1.28s

So for the number of revolutions she makes is given as

n=a*t\\n=(1.2rev/s)(1.28s)\\n=1.532revolutions

8 0
3 years ago
a car with a mass of 2000 kilograms is moving around a circular curve at a uniform velocity of 25 meters per second. The curve h
melisa1 [442]
In the given problem, we say various information's that are going to help us reach the ultimate answer to the question. Let us first write the information's that have been presented in front of us.
Mass of the car = 2000 kg
Velocity of the car = 25 m/s^2
Radius of the circle = 80 m
Now we already know the equation for calculating the centripetal force and that is
Centripetal Force = [mass * (velocity)^2]/Radius
                            = [2000 * (25)^2]/80
                            = (2000 * 625)/80
                            = 1250000/80
                            = 15625
So the centripetal force on the car is 15625 Newtons
  
4 0
3 years ago
Read 2 more answers
What is the law of conservation of energy.
Sever21 [200]

The law of conservation of energy implies that energy can neither be created nor destroyed, but can be changed from one form to another.

3 0
2 years ago
Other questions:
  • What planet has the least amount of inertia
    7·1 answer
  • HELP ASAP PLEASE!!!
    5·2 answers
  • The earth pulls the moon towards it because of the earth has more mass and therefore moe
    10·1 answer
  • True or false? A proton carries a positive charge.
    7·1 answer
  • Northrop aircraft developed and built a deceleration sled to test the effects of the extreme forces on humans and equipment. In
    7·1 answer
  • 2.
    12·2 answers
  • What does amplitude mean
    10·1 answer
  • Why do your legs appear shorter when standing in water
    7·1 answer
  • A student in the Biomechanics class has decided that she would like to make her arms
    9·1 answer
  • James has a mass of 98 kg and Basma has a mass of 59 kg. James is running at 3.0 m/s, while Basma is running at 4.0 m/s.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!