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1. B Why are two cellophane tapes attracted when ripped apart?

Hello, I put two strips of cellophane tape adjacent to each other adhered onto a table. When I pull them both apart, they repel each other, both insulators ripped electrons from the wood. When I stack two strips of tape on top of each other on a table, rip the combined bundle off the table...
2. I Actual measurement of radioactive decay

Hello, Are there any anthropologists, archaeologists, or geologists around on this board for help? I am trying to teach myself about radioactive decay via beta emission whereby a neutron spontaneously transmutes into a proton, releasing an electron. But, I do not understand the practical side...
3. Nitrogen transmutation to carbon-14 (radiocarbon) via gamma

Hello, I am trying to fully grasp the transmutation of nitrogen into radiocarbon (radiocarbon or carbon-14) via gamma collision high in the atmosphere But, I don't because I cannot whether something also happens to the electron. The canonical description is thus. High energy gamma particles...
4. Why can't I show Newton's Third Law by different means?

1. Homework Statement A small mass (1 kg) sits next to a larger mass (3 kg) on a table. A force of 5 newtons pushes from left to right on the system while a force of 3 newtons pushes from right to left on the system. Am I justified to conclude that the net force on the larger block has...
5. Does mass impact speed on a ramp?

Mentors Note: Posts from a duplicate thread have been merged into this one. Hello, please explain the following in detail. I am a learning assistant (LA) at a major university but am stuck explaining a concept to my students. Does mass have an impact on an inclined plane? A cart with wheels or...
6. What are everyday nonlinear examples?

What are everyday nonlinear" examples? Hello! Is there a simple way to identify a nonlinear equation or physical system by looking at it? I have sifted through material about unpredictability, chaos, fractals, and the other buzzwords encompassing nonlinear systems", and have glossed...
7. Expanding universe and light detection

Sorry if this question has been reproduced elsewhere. If the universe expands greater than the speed of light, c, will a light ray from a distant object never reach us? Lawrence Krauss gave a nice presentation and commented about this, but this has thrown my nose out of sorts because I think...
8. Physics Dejected question about physics future

Thank you for taking the time to read this frantic, incoherent pabulum. Question -- Would you leave physics Ph.D. graduate research to go teach at a very high-level preparatory school if 1) you really like teaching (and have taught for three years) 2) the salary the prep school offering...