Agrapefruit has a weight on earth of 4.9 newtons. what is the grapefruit mass

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

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

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.