# plate

1. ### Color fringes on heated plate

I've recently noticed that the ceramic plates I have home show an interesting light pattern whenever light is reflected on a slightly heated area of them. The setup is the following: a ceramic plate, a lightbulb a meter above it, and any means of heating such as blowing hot air or putting hot...
2. ### Holding down steel plate w/ multiple magnets: Does orientation matter?

The picture below shows an image of a bed from a 3d printer, which I intend to equip with an array of 15 x 3 mm Neodym magnets to hold down a steel plate. The steel plate itself is not and can not be equipped with magnets. Theres a heated aluminium bed between magnets and steel plate and the...
3. ### Incidence angle - tilted plate

Would you please be able to assist on the following question: A vertical plate is subjected to rays from a light source located 35 degrees above the horizon. The plate itself is tilted 12.5 degrees around its vertical axis reducing the exposure to the light source. Find the incidence angle...
4. ### Incidence angle - tilted plate

Would you please be able to assist on the following question: A vertical plate is subjected to rays from a light source located 35 degrees above the horizon. The plate itself is tilted 12.5 degrees around its vertical axis reducing the exposure to the light source. Find the incidence angle...
5. ### Incidence angle - tilted plate

Would you please be able to assist on the following question: A vertical plate is subjected to rays from a light source located 35 degrees above the horizon. The plate itself is tilted 12.5 degrees around its vertical axis reducing the exposure to the light source. Find the incidence angle...
6. ### Flow velocity required to cool flat plate

A hot steel plate of length 1m and width .5m at 629k is cooled in an airstream of 298k. Find the velocity of the airstream required to remove 1kw of heat from each side of the plate. I don't even have a clue what to do here. In our one example, we weren't seeking velocity, and our...
7. ### Calculating with plate heat exhanger

One the right side is sea water, and on the left there is water with 30% glycol. 1: How do i calculate the energy on the left side of the heat exchanger? i can't use the same cp value for different temperatures. 50% water, 50% glycol and 48,5 degrees have cp=3,348 50% water, 50% glycol and...
8. ### How to determine shear rate in rotating plate?

Hello, I was wondering how to determine shear rate in rotating plate as below. I believe the plate length (L) and height (H) should have influence on the magnitude of shear rate. What would be relationship between shear rate and plate length/height? Is there any publication about that...
9. ### How to determine shear rate in rotating plate?

Hello, I was wondering how to determine shear rate in rotating plate as below. I believe the plate length (L) and height (H) should have influence on the magnitude of shear rate. What would be relationship between shear rate and plate length/height? Is there any publication about that? Thank...
10. ### A plate held in fluid flow

If I am hanging a square plate using a thread in a fluid flow what will be the force acting on the plate? will it be drag force it self? In drag force, there is a cross section area, but the cross section area of plate is negligible. So is it drag force itself or is there some other equation...
11. ### Electric field in a parallel plate capacitor

The Electric Field in a parallel plate capacitor is approximately constant between the plates of the capacitor. Why is this so? I imagine it is only true if the distance between the capacitor is small compared to the area of the plates or it may just be the opposite of that. Prove it...
12. ### Dielectric Filled Parallel Plate Capacitor Question

I recently had a test in my Physics class and I answered this question wrong. I'm trying to figure out the correct solution so I can keep it in my records for future reference. I'm unsure how to set this up, I can't seem to find a way to solve it without a given value of Q. "A parallel...
13. ### Charge on A plate of capacitor

If the capacitance and voltage are given, (also, the capacitor plate's separation and area of cross section of plates given,) , is it correct that "Q" is the net charge on the capacitor (from eq: C=QV ) so that we may take "Q/2" as the charge on either plate? Is this approach correct ? Just want...
14. ### Parallel plate capacitor

Here is the question... A parallel plate capacitor with paper between the plates has an electric field of 9.31 104 V/m between the plates. The plates are 1.75 mm apart and the charge on each plate is 0.775 µC. Find the capacitance of this capacitor. 1 F Find the area of each plate. 2...
15. ### Stuck on a similar problem - Determining the largest mass that the plate can hold

3- 56 the ends of the three cables are attached to a ring at A and to the edge of the uniform plate. Determine the largest mass the plate can have if each cable can support a maximum tension of 15 Kn this is the top left question with the diagram
16. ### Parallel Plate Electric Field

Hi there, I just wanted to see if anyone could help with the answer to this past examination question as I don't have the answers so not sure if I'm doing them correctly! Thanks in advance. An electron is liberated from the lower of two parallel plates seperated by 5mm. The upper plate has a...
17. ### suspended circular plate

So, the problem is: Knowing that the wires attached at D form 30^o angles with the vertical and that the x component of the force exerted by wire AD on the plate is 220.6\text{N}, determine the tension in wire AD. This is how I approach it: Assume that a is the x component of AD...

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