an object is 50 cm to the left and an image is 50 cm to the right of a convex lens. What is the focal length?

What is special about a dc circuit ?

Which of the following is tru about semi-conductors

Question 1 of 10multiple choice: select the best answer and click "submit."what method of forecasting predicts the arrival time of a storm based on itscurrent speed and other starting variableso a. climatology methodo b. trends methodo c. analog methodod. persistence method