Ineed the answer all types of coal have the same energy value? ?

No, here are some rankings I found. please make me the brainliest!

Comparisons and Ranking

Rank

Type of Coal

Calorific Value (MJ/kg)

#1

Anthracite

30 millijoules per kilogram

#2

Bituminous

18.8–29.3 millijoules per kilogram

#3

Sub-bituminous

8.3–25 millijoules per kilogram

#4

Lignite (brown coal)

5.5–14.3 millijoules per kilogram

about 40,000,000 results (0.81 seconds)  

search results

what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.