An arthroscope can be inserted into a knee joint through a very tiny incision to a doctor examine the knee. a light is transmitted through the scope to illuminate the joint.
what type of light technology is being described?

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

If a substance is in the gas phase, which of qualities of the gas will stay constant? a: volume b: mass c: shape d: position of particles

At what time will the interfering waves have an amplitudeof zero?