Problem 2 the james webb space telescope, the telescope that will replace the hubble, has a primary mirror that is concave with focal length with magnitude |f| = |131.4m|. what is the radius of curvature of the mirror with the correct sign? select one of the following: (a) 0m (b) +65.7m (c) −65.7m (d) +131.4m (e) −131.4m (f) +262.8m (g) −262.8m

According to the phase diagram for water, how is the state of water determined? proceed up a vertical line at any given temperature read the phase at the intersection of any given temperature and pressure at a given pressure, proceed horizontally to the s-l or l-g line

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers distance