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?

Explain the doppler effect in terms of frequency, wavelength, and speed.

Experiment scenario 2: a biology student wants to conduct a study of how the amount of food affects the weight gain for mice. i have set up four cages with a mouse in each cage. fill in the boxes that would allow the biology student to complete the study correctly

How much force was applied to an object if was moved 2 meters and the work done on the object was 8 joules? a. 0.25 n b. 4 n c. 6 n d. 16 n