Acertain five cent coin contains 5.00 g of nickel. what fraction of the nickel atoms' electrons, removed and placed 1.00 m above it, would support the weight of this coin? the atomic mass of nickel is 58.7, and each nickel atom contains 28 electrons and 28 protons. (answer in ×10^{-11})

What are the differences and similarities of a compression wave and a transverse wave?

Ateam of astronauts is on a mission to land on and explore a large asteroid. in addition to collecting samples and performing experiments, one of their tasks is to demonstrate the concept of the escape speed by throwing rocks straight up at various initial speeds. with what minimum initial speed vesc will the rocks need to be thrown in order for them never to "fall" back to the asteroid? assume that the asteroid is approximately spherical, with an average density p 3.84 x108 g/m3 and volume v 2.17 x 1012 m3 recall that the universal gravitational constant is g 6.67 x 10-11 n m2/kg2

15. one purpose of the tread pattern on a tire is to a reduce tire wear. b. reduce traction c. allow water to flow away from the tire. d. look impressive.