So I have a Gr 11 Physics Science project. I need to build a Brushed DC motor.
I already build an armature with coils. I have a copper commutator and copper are connected to it. Lastly, I placed electric tape on the wood body
The problem is that I don't know how to make an effective Brush...
I know what nodes and antinodes are, but I am kind of representing the questions not only I have, but my class as well. They ask me to post this stuff to help them out as well.
I know that under the condition a standing wave is locked between two points that Ln=n(λ/2) where n represents the...
Homework Statement
Question 1: A violin is tuned indoors to play the proper frequencies. A musician then uses the violin to play outdoors where the temperature is considerably colder. Wil the violin play too sharp (high) or too flat (low)? Ignore temperature effects on length and densityThe...
Okay, Don't rage at me if I get this wrong, but
V=λ/τ or V=∫λ
∫ being frequency, I know the question stated there was no change in tension of the string so velocity must be constant.
I don't know why my teacher said wave length in a string is constant, if that's the case there would be...
Homework Statement
This is a communication question, no variables given:
Predict what happens to the wavelength of a wave on a
string when the frequency is doubled. Assume that the
tension in the string remains the same. Confirm your
prediction mathematically.
The Attempt at a...
Im referring to position as the distance it is from the final position (h=0 at final position).
Here is my observation chart, maybe it can help.
http://img841.imageshack.us/img841/4217/chart8c.png
Task
So I am writting a lab, and one of the testable questions required me to come up with a relationship between position and kinetic energy.
In the lab a cart is released on a ramp and the end point of the cart is used as the reference point (h=0). We formed a position time graph and we...
What I didn't understand is when you have an object at a height of 10M above a reference point per-say, would you need to set its height as positive or negative? Or is the gravitational potential energy positive or negative depending on whether the object is above or below the reference point?
The thing I think I am having trouble with is this:
1. When energy is being conserved the work being done on the object is 0.
2. Because Fg is a conservative force, If there are no non conservative forces on it, then the total work done on the object is 0.
Therefore the mechanical energy at...
Im SOOOO Confused.
Im studying Work, Energy and Society and I'm really darn confused.
I have the highest mark in the course, and If I'm confused, I'm wondering how others are feeling.
Whenever I have multiple questions, and they may sound stupid but please help me out:
1. Does Fg do...
1. Are these two the same? I'm not sure. Sometimes my teacher labels the Y axis with a Delta Displacement [E]. Other times it's just Position (M), so I'm not sure how to identify if we are finding Speed or Velocity.
I'm just assuming they are the same.
2. Also, position is a Vector quantity...