An object with a height of 4. 0 cm is placed 30. 0 cm from a lens. The resulting inverted image has a height of 1. 5 cm. What is the focal length of the lens?.

Mount saint helen the great lakes and death valley are physical features of the earth which scientific term describes these features

Afarmer began a new method of reducing grain spills. this reduced the number of mice on the farm. the number of snakes in the surrounding area decreased at the same time. the snakes depended on the mice that lived in the field. what’s the likely reason the snake population decreased? a. the number of snake predators increased. b. the number of mice increased. c. the number of mice decreased. d. the pesticides affected the snakes. e. a new breed of mice moved into the field.

During a load test, a battery's voltage drops below a specified value. what action should the technician take?