While visiting Planet Physics, you toss a rock straight up at 15 m/s and catch it 2.7 s later. While you visit the surface, your cruise ship orbits at an altitude equal to the planet's radius every 250 min . Part A What is the mass of Planet Physics?
Part B What is the radius of Planet Physics?

What is the length x of the side of the triangle below? (hint: use the cosine function)

In this thread, i would like you to comment on the nature of light and how operation of telescopes. light has a duality of a particle and a wave; which one affects your life? also how does light interact with optics inside telescopic systems? answer these questions in two paragraphs. then respond the another students response.

What is the relationship between globular clusters and the milky way?