Which of these best describes energy?
A. the emission of particles from unstable nuclei
B. the capacity to do work
C. the splitting of a nucleus
D. the combining of nuclei
here are the answers for conexus students:
1) Which example represents a class 2 lever?
answer to 1)= a car door being opened and shut.
2)Which statement best describes energy?
answer to 2)= Energy is the ability to do work.
3)Which statement best describes work?
answer to 3)= Work is the force that causes movement in an object.
4)A shovel performs several different functions. One of these is that it gives mechanical advantage as a lever. When does it act like a lever?
answer to 4)=when the shovel is in the dirt and you push down against the end of the shovel, making it pivot.
5) A person uses a screwdriver as a lever to open a can of paint. Where is the fulcrum in this situation?
answer to 5)= the point where the screwdriver touches the rim of the can
your welcome and ik how hard it can be with your parents and all so i have no problem doing this:) byeeeeee
and also i would like to say hi to all the kids in the future looking at this😝😝
OH MY GOD SORRY THIS WAS THE WRONG QUICK CHECK!! SORRY
WEEEB IS CORRECT
4 THE LEVERS QUICK CHECK
The best description of energy among the given options is B. the capacity to do work.
To understand this, it's helpful to know that energy is a fundamental concept in physics that is used to describe the ability or capacity to do work. In simple terms, energy is what allows things to happen or causes changes to occur. It is a measure of the potential or ability of a system to exert force or produce a physical change.
For example, when you lift an object, you are exerting energy in order to do work against the force of gravity. Similarly, when fuel is burned in a car engine, it releases the chemical energy stored in the fuel, which is then converted into kinetic energy to move the car.
In this way, energy is closely related to the concept of work, which is the transfer of energy from one system to another. So, when you see the term "the capacity to do work" in option B, it best captures the essence of what energy represents.
To arrive at this answer, you can eliminate the other options by recognizing that they are incorrect descriptions of energy:
A. The emission of particles from unstable nuclei refers to radioactive decay, a process that is associated with certain types of nuclear reactions but is not a comprehensive definition of energy.
C. The splitting of a nucleus refers to nuclear fission, which is a specific type of nuclear reaction but again does not encompass all forms of energy.
D. The combining of nuclei refers to nuclear fusion, another specific type of nuclear reaction that releases a tremendous amount of energy, but it is not a general description of what energy is.
By process of elimination, option B, the capacity to do work, is the best choice for describing energy.
Dictionaries are wonderful sources.
http://dictionary.reference.com/browse/energy