A50 kg skater twirls at 0.77 rev/s with her arms extended. she then brings her arms in and twirls at 1.03 rev/s. the skater's mass moment of inertia can be determined by approximating her to be a uniform cylinder with radius 13 cm when her arms are in.

Which type of microscope would allow the viewer to see ribosomes inside a cell?

The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.

Which missing item would complete this alpha decay reaction ? > 228/88ra + 4/2he a.224/96 rn b. 232/90 th c. 230/92 u d. 235/92 u