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
rodikova [14]
2 years ago
5

What is the most important thing to remember about how to calculate Mechanical Energy?

Physics
1 answer:
nataly862011 [7]2 years ago
6 0

Answer:

The mechanical energy of a classical system is simply equal to the sum of its kinetic and potential energies.

E=T+V

Where the kinetic energy T is given by the equation

T=12mv2

and the potential energy V differs depending on whatever forces are acting on the system.

If the force acting on the object is gravity (a common case) the potential energy is given by

V(r)=GMmr

where the Ms represent the mass of the two interacting objects (The system and the earth, for example), r is the distance between their centers of mass, and G is the universal gravitational constant (=6.67e-11 N m^2 kg^-2)

In simple, close to earth, situations, it takes the simpler form

V=mgh

Where m is the mass of the system, g the gravitational acceleration, and h the height.

Another well-known and important potential energy is that for a spring that obeys Hooke's law.

V(x)=12kx2

The potential energy can otherwise be calculated from its definition; the value of potential energy at a point in space is equal to the negative of the Work needed to bring the object to that point from an arbitrarily chosen reference point in space, which is generally chosen so that the potential energy will never be negative.

This is a very broad question. The most broad answer i can give is that energy (mechanical, potential, chemical, etc...) can all be measured in Joulse. This is a unit for energy. Work and energy are the same, and work is defined as force (mass * acceleration) times a distance. The base unit of force is Newtons (1kg * (9.81 meters / second^2)) and for distance it is Meters, furthermore one joule of energy is equal to one Newton-Meter. There, now we know that one joule of energy is equivalent to moving 1 kilogram of mass at 9.81 m/s^2 over a distance of 1 meter; or any such manipulation of the

It seems, that you lack knowledge of Physics and Mathematics.

Go to Ramamurti Shankar “Fundamental Physics I” on You Tube and try to follow Prof. Shankar. I know no better teacher. Just watch the videos until you have understood all the remarks and expanations. Do not learn formulas by heart; do learn the logic of how to derive those formulas. Try to understand the Principles of Physics. Do not fool yourself. Work seriously and honestly. Use your logic and try to fix your logic. (I hope that you understand what I am talking about.)

With lesson 12–15 of “Fundamental Physics I” you will get the best introduction to Special Relativity Theory. The Lorentz Transformation are just beautiful and … everything follows from them. It will take you only 5 hours if you are smart.

Have you another question ?

You might be interested in
The ____ of an object is a measure of the amount of matter it contains. on the other hand ____ is a measure of the gravitational
Phoenix [80]
<span>The Gravitational Force of an object is a measure of the amount of matter it contains. on the other hand __Matter__ is a measure of the gravitational force on an object. I hope it helps :)</span>
7 0
3 years ago
HELP I'll Mark as brainliest!
Alex777 [14]

Answer: Gus sues Russell for stealing postage stamps

Explanation:

3 0
3 years ago
A device that converts high voltages to lower voltages is a(n) ________.
AysviL [449]

Answer: A) Transformer

Explanation: A Transformer is an apparatus, device or a component in a system that is used to convert high voltage into low voltage. It is used to either increase or decrease the voltage of an alternating current.

A transformer uses the basic principle of electro magnetic induction, having two or more coils, the voltage is changed from one coil to another but with thesame frequency as alternating current energy passes through them.

7 0
3 years ago
How much heat is needed to melt 16.5kg of silver that is initially at 20*c?
zubka84 [21]
The Specific Heat Capacity of silver is 230 J/kgK, melting point is 961.8 C so the difference is 941.8K. Now we simply do q=230J/kgK*16.5kg*941.8K and that is 3 574 131 J
8 0
3 years ago
X-rays with frequency 3 ⨉ 10 18 Hz shine on a crystal, producing an interference pattern. If the first bright spot is observed a
FrozenT [24]

Answer:

5.1645\times 10^{-11}\ m

Explanation:

n = Order = 1

c = Speed of light = 3\times 10^8\ m/s

f = Frequency = 3\times 10^{18}\ Hz

\theta = Angle = 75.5^{\circ}

Lattice spacing is given by

d=\dfrac{n\lambda}{2\sin\theta}\\\Rightarrow d=\dfrac{n\times c}{f2\sin\theta}\\\Rightarrow d=\dfrac{1\times 3\times 10^{8}}{3\times 10^{18}\times 2\times \sin75.5^{\circ}}\\\Rightarrow d=5.1645\times 10^{-11}\ m

The lattice spacing of the crystal is 5.1645\times 10^{-11}\ m

6 0
3 years ago
Other questions:
  • A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 79.6 m/s at ground level.
    11·1 answer
  • Which of the following is characteristic of proficient catching?
    14·1 answer
  • Which best describe the kinetic energy of the particles in solids, liquids, and gases? Check all that apply.
    11·2 answers
  • how many meters would you have traveled after 90 minutes if you're average velocity is 4 kilometers per hour?​
    14·1 answer
  • Which diagram shows diffraction as light passes through an opening?
    9·2 answers
  • PLEASE HELP<br> Due in a few minutes!!!!!<br> Have not finished yet :
    12·1 answer
  • Students make the claim that Jupiter is the warmest gaseous planet.
    5·2 answers
  • The Cartesian coordinate of a point in the xy plane are (x,y)=(-3.50,-2.50)m. Find the poler coordinate of this point
    15·1 answer
  • an airplane is moving at a speed of 75 m/s. as it. lands on a. runwsys. if. the runway is. 500m long, what is the acceleration o
    11·1 answer
  • A solar eclipse occurs when the A solar eclipse occurs when the the moon's shadow touches Earth. moon passes into the Earth's sh
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!