Question Help A telescope contains both a parabolic mirror and a hyperbolic mirror. They share focus Upper F 1F1, which is 4545 feet above the vertex of the parabola. The hyperbola's second focus Upper F 2F2 is 77 ft above the parabola's vertex. The vertex of the hyperbolic mirror is 33 ft below Upper F 1F1. Find the equation of the hyperbola if the center is at the origin of a coordinate system and the foci are on the y-axis.

frequency or wavelenth of em radiation in a vacuum

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.