A 10.00-cm tall object is placed 38.4 cm in front of a converging lens, and an image is formed 27.4 cm in back of the lens. The focal length of the lens must be --- Lens
Formula

What type of nuclear decay causes the atomic number of an element to increase by 1?

Afigure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 20.9 12000 200 3.33

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