In the context of a homework question in basic physics I would say that your two "reasons" and your "two ways to solve these issues" are all correct answers. As I have given you full marks for your answer you may enjoy thinking some more about the experimental problem.
If you keep the room...
If you can see the obvious answer now, that's fine.
If you still can't see the answer I will point out one little criticism of the original question, or at least the way it is entered in message #1. This is a possible source of confusion:
The question contains a term "v" and another term...
This question is so ridiculously simple that it creates a thinking-trap! It is tempting to think "It can't be that easy... must do some difficult equation solving ... etc."
It is good to know that things are not always complicated. Sometimes the answer is right in front of you :smile:
The...
The original question contains the curious phrase "The shell ... gets split into two parts ..."
The fact that the phrase sounds a little odd can alert us to the essential core of this question...
We know the shell becomes two parts - but we don't know how that happens or why it happens.
Is it...
Using energy to calculate the vertical speed is an interesting idea. It would be an elegant method of finding the vertical speed if the question had given us a value for the vertical displacement of the electron beam between the point where it enters the gap between the plates and the point...
There is no obvious choice of liquid that I can think of. You will need to collect together and compare the data on heat capacity, latent heat of fusion, and freezing point for various liquids.
I think the freezing point temperature will be the biggest problem. Most liquids have lower heat...
Your intuition is correct. Standing waves, in general, do not require string lengths to be integral multiples of wavelength.
When any sinusoidal wave is reflected back on itself from a single reflecting surface or point the result is two superimposed waves of equal wavelength traveling in...
Start by considering what happens if the rod is not connected to the Earth at a pivot point.
The system of the Earth and the rod has gravitational potential energy when the two objects are separated in space and they have the er.. "potential" to fall towards each other.
When such a rod does...
The asymmetry is easier to understand with a larger movement speed. This predicts that the doppler pitch change is greater when the sound source is moving towards the observer, and not so large if the observer is moving towards the source.
Let the sound source, at rest, generate a single...
The calculation in message #7 above assumes an objective for the idea of a "sweet spot" as being any combination of the ball impact point and hand grip location such that the impact between the ball and the bat causes zero instantaneous acceleration to be felt at the hand grip.
The mathematical...
Hi Joseph. Congratulations on your probing analysis of terminal velocity. I hope your physics teacher was impressed.
Here is something else to think about that can help you resolve many technical "arguments" in a positive way, including the current one...
The physics theory regarding terminal...
The easy answer:
By analogy with an electrical circuit.. If you connect a voltage source to a short-circuit then a large electric current flows. If you then introduce a small resistance in the circuit the electrical current goes down dramatically.
The iron core of a toroidal (donut with a hole)...
We need to explore what your question means.
Is this what you are doing?...
You are applying electrical power to a Peltier cell.
The electrical power is causing the Peltier cell to cool.
You have a small flat dish in contact with the cell.
The dish will hold about 8cc of some...
Defining a "sweet spot" may have various possible meanings, given that the idea involves some aspects of what "feels good". Bearing that in mind, there is one mechanical definition that can be dealt with fairly easily by mathematics and also by a simple experiment.
The simple mechanical...
Understanding when and where to use the First Law and the Third Law...
It's easy to decide which law applies based on some key decision points.. but it's easy to go wrong also!
The First Law (object at rest etc..) tells us that the total of all forces acting equals zero. It says nothing...