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
GuDViN [60]
3 years ago
7

In a system with only a single force acting upon a body, what is the relationship between the change in kinetic energy and the w

ork done by the force?
Physics
1 answer:
Makovka662 [10]3 years ago
6 0

Answer: W.D = 1/2mv^2

Explanation:

If an external force or a single force is acting on a body. Just like the first law of thermodynamics, the force acting on the body will cause work done on the system.

Work done = force × distance

And the work done on the body will cause the molecules of the body to experience motion and thereby producing kinetic energy.

The work done will be converted to kinetic energy.

W.D = 1/2mv^2

You might be interested in
When a front wheel drops off the roadway you should?
nikdorinn [45]
<span>braking and returning suddenly to the roadway</span>
6 0
3 years ago
A neutron star has a mass of between 1.4-2.8 solar masses compressed to the size of:
BARSIC [14]

The correct answer is D. An average city

Explanation:

A neutron star differs from others due to its massive density, this means a lot of matter is compressed in a small area. Indeed, neutron stars have a mass of around 1.4 to 2.8 times the mass of the sun. But these are considerably small as they only measure around 20 kilometers, which is the size of an average city. Additionally, neutron stars are this dense because they are the result of a regular star exploding, which leads to a super-dense core, or neutron star. In this context, the mass of a neutron star is compressed to the size of an average city.

7 0
2 years ago
NASA is giving serious consideration to the concept of solar sailing. A solar sailcraft uses a large, low mass sail and the ener
Stella [2.4K]

Answer:

Reflective

Explanation:

The radiation pressure of the wave that totally absorbed is given by;

P_{abs}= \frac{I}{C}

and While the radiation pressure of the wave totally reflected is given by;

P_{ref}= \frac{2I}{C}

Now compare the two-equation you can clearly see that the pressure due to reflection is larger than absorption therefore the sail should be reflective.

6 0
3 years ago
620 J of heat is added to the cylinder of an engine, which causes the gas inside to expand. As a result, the piston of the engin
Maru [420]

Answer:

<u>400</u> J work is done BY the engine.

The internal energy of the gas is <u>620</u> J

Explanation:

The given information are;

The heat added to the cylinder = 620 J

The force applied by the piston of the engine = 8.0 kN = 8,000 N

The distance over which the force moves (the piston) = 5.0 cm = 0.05 m

The work done (by the engine) = Force × Distance = 8,000 N × 0.05 m = 400 J

The internal energy is the sum of the kinetic and potential energy of the system

Therefore, given that the internal energy, U, is the sum total of the energy in the system

∴ U = The heat supplied to the system = 620 J

Which gives;

<u>400</u> J work is done BY the engine.

The internal energy of the gas is <u>620</u> J.

6 0
2 years ago
If the mess of an object______, the weight of an object will _______
Gnom [1K]

Answer:

the same

Explanation:

7 0
2 years ago
Other questions:
  • For every action force, there is: A. a net force. B. an unbalanced force. C. a friction force. D. an equal and opposite force. E
    7·1 answer
  • a) When we were examining the Electromagnetic Tab, we saw that a flow of electrons or a current as we say it, creates a magnetic
    15·1 answer
  • A fish swimming in a horizontal plane has velocity i = (4.00 + 1.00 ) m/s at a point in the ocean where the position relative to
    12·1 answer
  • A frictionless, massless pulley is attached to the ceiling, in a gravity field of 9.81 m/s2. Mass M2 is greater than mass m1. Th
    13·1 answer
  • If a 2 kg spring is compressed by exerting a force of 10 newtons a distance of 50 cm how much work is done?
    14·1 answer
  • What is the time required for sound to travel 1.75 km if the temp of the air is 20 C°?
    15·1 answer
  • Determine whether a moving tennis ball and a racket held by the player have the same momentum or different momentum. If differen
    14·1 answer
  • This is the question<br> please help asap
    11·1 answer
  • Cork has a density of about 0.60 g/cm3 . Cork will partially float in water which has a density of 1.0 g/cm3 . If the piece of c
    7·1 answer
  • An object of mass 2 kg travels through outer space in a straight line at a constant
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!