How much thermal energy is created when a 3000 kg suv brakes to a stop from 20 m/s on a level road? a. 1,200,000 J
b. 600,000 J
c. 60,000 J
d. 30,000 J
e. 90,000,000 J
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How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87