Tagged Questions

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2answers
95 views

How does Electromagnetic Radiation propagates through space?

Hello everybody. I've been having difficulty in understanding how an electromagnetic wave propagates through space. Firstly, from what I understand, electromagnetic waves are mad …
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1answer
41 views

How can I calculate torque/power of an engine using accelerometer data?

I'm using an accelerometer to record the rate of acceleration of a vehicle over time (1500kg). With this data I am calculating speed and distance traveled over time. I'm now trying …
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2answers
39 views

I need help with free expansion of an ideal gas

I know that the work done on the system in any free expansion is 0 since the external pressure is 0. However.. is q necessarily 0? Does the temperature necessarily stay constant fo …
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2answers
29 views

Is the net charge density on each plate(sigmainitial - sigmainduced) the same in both plates or different?

Say i have a capacitor and i supply it with a voltage V and after that it has charge density sigmainitial on each plate. Now i remove the voltage source and then introduce a diele …
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2answers
47 views

Can someone please clarify the Fundamental Relation of Thermodynamics for me?

What does it mean to say that the fundamental relation of thermodynamics is homogeneous first-order? I struggle with the abstraction of mathematical definitions and, I'm really se …
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1answer
21 views

I need help understanding how viscosity affects motion?

How does the viscosity of a fluid in a circular can affect the way the can rolls? For example, 2 cans of similar size, volume, and mass are rolled down a ramp with the same slope. …