Which of the following paraphrases hubble law? select one: a. the greater the distance to a galaxy, the greater its redshift. b. the more distant a galaxy is, the younger it appears. c. the older the galaxy appears to us, the more luminous it is. d. the faster the galaxy spins, the more massive and luminous it is. e. the greater the distance to a galaxy, the fainter it is.

The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.