Recent content by YarnJunior

Hello! So I've been looking at making a decent calculation of the AU from the 2012 transit. As you can see from the first picture (Taken with the South Pole at the top), this is the method I'm using from the following video: I use 2*(Pi)/Period of Earth to calculate the angular speed from...

I'm not quite sure how I can add anything if a cell is present. Do I add it normally or do I have to include the cell somehow?

Homework Statement Check the Picture Homework EquationsThe Attempt at a Solution I've never dealt with a three-cell circuit before. For calculating the current, I tried doing Kirschoff's Voltage Law, all I kept getting was that I1 = negative I2. I tried taking the current as coming out of the...

The answer key is directly from the book, so supposedly it has some merit. It's quite confusing to say the least. Is there any way to justify this answer? It seems like a very simple question, but it became needlessly complicated.

That's exactly the givens for the question. You're meant to calculate the volume per unit time of the dryer. The answer sheet just says Density x (Change in Volume / Change in Time) and multiplies density with the mass per unit time for some reason? Is this an error or am I missing something...

Homework Statement A hair dryer consists of a coil that warms air and a fan that blows the warm air out. The coil generates thermal energy at a rate of 600 W. Take the density of the air to be 1.25 Kg/m^3 and its specific heat capacity to be 990J/Kgk. The dryer takes air from a room at 20C and...

Hello! So this is a rather stupid question, but I'm having trouble with gravitational fields, and can't exactly pinpoint what's going on. The total energy of an orbiting satellite is (due to ME = KE + GPE) (-GMm/2r), right? Well, I have found multiple statements that claim that the 'r' we use...