Recent content by Niki4444

Homework Statement see topic title Homework Equations I think that sound waves are vibrations of particles in a medium. The vibrations continue until the energy is gone. Sound seems to need a medium to travel through. Light can travel in a vacuum. your eye sees it from a source...

nope, the program just tells me that my answer is incorrect. Oh man.

yes, 3 cm and -3 cm are definitely wrong. I'm stumped.

Thank you for letting me know I'm making physics harder than it needs to be! I certainly don't want to do that. So L is the distance from the object to the final image?? So, you said... The length of the tube, L, must be long enough to contain the distance of the first image from the first...

Sure... for the first part of the problem, my work is: (I drew the picture so the object is on the far left of my paper, with the lenses to the right) 1/f=1/s+1/s' 1/9=1/36+1/s' 4/36-1/36=3/36=1/12 so s' would be 12 cm so the image is 12 cm to the right of the first lens for the...

Homework Statement A microscope has a converging lens (eyepiece) with focal length of 2.50 cm mounted on one end of a tube of adjustable length. At the other end is another converging lens (objective) with a focal length of 1.00 cm. When you place the sample 1.30 cm from the objective, what...

Homework Statement the figure shows a combination of two identical lenses. There is a 2cm tall object that is 36 cm away from the first lens (f=9 cm). The second lens is 15 cm away from the first lens. It also has a focal length of 9 cm. So, the first question was "find the position of the...

Thank you! That makes much more sense than the confusion I was having over what is v-avg, what is v-rms, and what is v-squared... from a picture. Thank you, thank you, thank you! I get it now.

Hello! I have a question. When I am provided with a histogram, with % of molecules along the y-axis and speed range (m/s) along the x-axis, how do I use this to determine the average speed (v avg) and v-rms (root mean square) of the molecules in the gas? I am very puzzled. Any suggestions or...