Recent content by jldibble

I need this in simple terms. Here's what I think I know so far (assuming 95% confidence level): MOE from a sample proportion is 2√(p(1-p)/n) and I think this is assuming the sample proportion is close to the population proportion. But then there is a sampling distribution of sample proportions...

This question is more for practicality than anything else, and I realize it may be partly subjective. At what temperatures can the 273 degree difference between Kelvin and Celsius scales be ignored? I'm thinking for examples regarding stars and very high temperatures. Surely once you get to 15...

Cosine is 90 degrees out of phase with sine.

I was thinking the same thing. I'm going to try it today.

same reaction when close and farther away from the magnets

I'm aware that there is actually a magnetic south pole located near our geographic north pole. The problem I'm having is that multiple magnets (new and old ones that I found) do not behave as expected when a compass is near them. The red (north) end of every single compass always points towards...

I have several bar magnets with the north and south poles labeled on them. It is my understanding that a compass itself is a tiny magnet and the north (often the red part of the compass) end is itself a north polarity. This means that this end would point towards a south pole of a magnet. From...

I'm attempting a physical recreation as a lab experiment.

I'm trying to figure out which layers of the sun emit different types of radiation For instance; I know that most of the visible light is emitted from the photosphere but what about IR, UV, x-ray, etc...? Anyone know?

I'm hoping to make (or model) these little cells on my own, but I'm not entirely sure how it can be done with household materials. I've seen a few videos of it being done but there's not much on how to create them. Any ideas? Thanks

That's it! Thanks

I understand the forces at work when it comes to the shape. I'm just trying to track down the term that was used that I can't seem to find. I believe term was three words and was something along the lines of "gravitational ____________ __________" I apologize that I can't be more descriptive...

Why planets are "spheres" I was reading the specifics on why large bodies in space, such as planets, are pulled into spherical shape and they had a very technical term for the process. Does anyone know what I'm talking about?

Here's the setup

As I understand it, pulleys will reduce the force needed to lift objects but require a greater distance. As the number of pulleys increase, the force decreases. But for all cases of pulleys, the work required to lift a given object to a given height will always remain the same. When I attach...