A 705-N Marine in basic training climbs a 10.5-m vertical rope at a constant speed in 6.50 s. What is his power output

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

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

Which radioisotope is used in dating geological formations?