In May 2018, the Kilauea volcano on Hawaii's big island began to erupt, spewing lava over part of the island. Witch event are Hawaiians most likely to observe first in the areas covered by lava

A. Grasses will grow in soil with organic matter.
B. Mosses will grow in thin, rocky soil
C. Trees will grow in thick, rich soil
D. Lichens will grow on the cooled lava

Acoal-fired plant generates 600 mw of electric power. the plant uses 4.8 x 10^6 kg of coal each day, and the heat of combustion of coal is 3.3x 10^7 j/kg. the steam that drives the turbines is at a temperature of 300° c, and the exhaust water is at 37° c. (a) what is the overall efficiency of the plant for generating electric power? (b) how much thermal energy is exhausted each day? (c) what is the change in entropy of the universe for this heat engine? (d) using the same heat reservoirs, what is the maximum possible (carnot) efficiency for a heat engine?

=force × distance a. work b. velocity c. pressure d. momentum

Me pl give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.