Atoy car is placed 29.0cm from a convex mirror. the image of the car is upright and one-sixth as large as the actual car. calculate the mirror's power in diopters.

The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat

Based on the diagram of the electric field lines around the two spherical charges, what are the signs of the left and right charge respectively?