How does the scientific meaning of the words work, energy, force and efficiency compare to their every day meaning? State the similarities and differences? need answer asap. Thank you!
Answer:
Force
If you're taking classical physics, simply stated, a force is a push or a pull of some sort. But there is one other very important thing to understand about Force. A true Force is always an interaction (at least from a classical perspective). That means that forces always come in pairs. This is stated in Newton's Third Law (equal and opposite forces). Every action must have a reaction. This is required for all true forces. Another consequence of this is that force is a vector, meaning it has a magnitude and a direction. The action and reaction will always be opposite in direction.
A lot of people will say F=ma. This is true. However, it is important to keep in mind that this definition is a calculational tool. It is more precise to say the Sum of all forces=ma. The point is that ma is not a force. Forces are things like weight, tension, normal, friction, gravity, electrostatic, magnetic, and various other applied forces. The sum of forces on an object equals the product of its mass times its acceleration.
It is important to keep in mind that the force is on the object that accelerates. Another way to state this is that objects cannot accelerate themselves. You cannot push yourself back (or forwards). But if you push a heavy object like a desk forwards, then the desk can push you back.
Energy
There are many kinds of energy. There are two important things to know.
Energy is the ability to do work. It doesn't mean work is being done, but that work can be done. (So you can see there is an intimate relationship between work and energy).
Energy is conserved. That means the total amount of energy is always constant. If the energy is a system changes somehow, that means some work was done in order to move the energy from one system to another.
Energy is also a scalar (given that Work is a scalar).
How do you know when an object is moving at a constant speed or a changing speed?
Answer:
The sloping line shows that the speed of the object is changing. The object is either speeding up or slowing down. The steeper the slope of the line the greater the acceleration. If the line slopes upward from left to right, this means the object is speeding up.
Explanation:
Type of machine. For each example, decide if it changes the size of the
force, if it changes the distance the force acts, and if it changes the
direction of a force. Some machines may change the force in more than
one way (these have an *) and will each have 2 answers.
Answer:
1. distance, direction
2. size, direction
3. size, distance
4. direction, size
5. distance, direction
6. direction, size
7. direction, size
8. size, distance
9. direction, distance
10. size, distance
Explanation:
what is evaporation will give brainliest
Answer:
Evaporation is the process by which water changes from a liquid to a gas or vapor.
In order for electricity from a battery to power a light bulb, the wire has to provide the electricity a path to do what?
Answer:
The electricity that causes the light bulb to light in this activity is coming from the battery. The wire provides a conductive path for the electricity. But this information is not helpful in terms of understanding how the battery works.
Explanation:
Describe the difference between global knowledge and personal ideas.
Answer:
Global knowledge is information that is widely accepted and been proven as the truth. It is information that may not necessarily have a source because it is common knowledge and not easily attributed to a certain source. Personal ideas are original to the author and may not be widely accepted. It is important to give credit to others by citing their work to acknowledge that this is not your own findings but rather someone else's. It is plagiarism to use someone else's work as your own without giving credit to their work. -W0lf93
Explanation:
hope this helps
How is energy transformed?
Answer:
there you go buddy
Explanation:
be transformed from one another
1. Examine at least three different batteries at home or at a store, each with a different voltage. Download the battery chart and fill it in showing the type of battery (alkaline, NiCd, etc), the voltage, the size, and the use for which each battery is designed. Why do you think they are different in size and voltage? Link: https://s3.amazonaws.com/content.accelerate-ed.com/Secondary/docs/PhysicalScience/battery_chart.pdf
2. Examine two items that use more than one battery, such as a flashlight, a 2-way radio, or a battery-operated toy. Look at the arrangement of the batteries in the item. Are they connected in series? For each item, state the number and type of batteries, the voltage of each battery, and the total voltage produced.
Answer:
In the attached link is the answer.
Explanation:
Make sure you explain it well to receive brainliest. Thank You
Answer:
It's basically the intensity and frequency of going up and down.
Explanation:
The mouse, for example, isn't doing it very high, but is doing it pretty quick.
Help please? I'm really tired and I need help on this.
The volume of the box above is
centimeters.
Hint - Plug the measurements of the box into to formula for volume.
Skip to navigation
Answer:
40
Explanation:
Is it possible for a wave to have a long wavelength but high frequency?
Answer: The frequency of a wave is inversely proportional to its wavelength.
Explanation: That means that waves with a high frequency have a short wavelength, while waves with a low frequency have a longer wavelength. Light waves have very, very short wavelengths.