Susan's 12.0 kg baby brother paul sits on a mat. susan pulls the mat across the floor using a rope that is angled 30∘ above the floor. the tension is a constant 29.0 n and the coefficient of friction is 0.180. use work and energy to find paul's speed after being pulled 2.70m .express your answer with the appropriate units.

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

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx

Which of the following statement is false