Recent content by SpiffyPhysics

Thank you for your help everyone!

I was afraid of that. Is there a simplified version to consider? (This is actually for a 9th grade Earth science course, and it's online in an environment that doesn't allow for class discussion) If we don't consider the big complicated atmosphere but just a small quantity of gas that isn't in...

Thank you but no thank you...I've been teaching high school too long and left all of my understanding of calculus behind somewhere. Is there a simplified version to consider? (This is actually for a 9th grade Earth science course, and it's online in an environment that doesn't allow for class...

Hi, I'm an instructor at an online school, and my text says “ Air pressure is the amount of pressure the atmosphere places on the surface of Earth. Air pressure is usually measured as the weight of the column of air above a square meter (N/m2). As altitude increases, air density decreases and...

They seem to refer to both the black paper with a pinhole as a screen, and the white surface that the light is being projected onto as a screen (as I said, they are poorly written). Thank you for the tips about colored LEDs, wiring the LEDs and using a black screen. I will give that a try!

I'm updating some poorly written lab activities for an online physics class that I have been given, and I am going through the experiments and doing them myself to better write them. I came across this one, and I have no idea what the results are supposed to be. It comes after the chapter on...

Homework Statement In a tank full of water, the pressure on a surface 2 meters below the water level is 1.5 kPa. What is the pressure on a surface 6 meters below the water level? Homework Equations Isn't this impossible? The equation given is P=hdg. (height of water column x density x...

Thank you very much! Your description was very clear and helpful. I am not confident in editing or removing the test question on the basis of the text being unclear, and requesting a change to the text. Much appreciated!

Hello I am teaching physical science at an online school, and came across this issue in the textbook - I'm looking to double check with more knowledgeable people before I bring it up and potentially make a fool of myself. In one chapter of the physical science text it discusses various...