Author Question: Which of the following rocks would be expected to have the coarsest-grained texture? a) granite b) ... (Read 50 times)

futuristic · **on:** Jul 28, 2018

Which of the following rocks would be expected to have the coarsest-grained texture?
a) granite
b) obsidian
c) basalt
d) pumice

Question 2

A spring with spring constant k = 800 N/m is compressed 12 cm from its equilibrium position. A spring with spring constant k = 400 N/m has the same elastic potential energy as the first spring when its extension is
a. 0.060 m.
b. 0.085 m.
c. 0.12 m.
d. 0.17 m.
e. 0.24 m.