A 10 cm tall rose is placed in front of a converging lens. An image of height 40 cm is noticed on the other side of the lens.
a) Calculate the magnification. Provide only the answer (no steps needed).
b) Is the image smaller or larger than the original object? How do you know?
c) Is the image inverted or upright? Real or virtual? How do you know?
​

Apendulum has a mass of 1.5 kg and starts at a height of 0.4 m. if it is released from rest, how fast is it going when it reaches the lowest point of its path? acceleration due to gravity is g = 9.8 m/s2. a. 2.8 m/s b. 0 m/s c. 5.9 m/s d. 4.3 m/s

During the past 150 years in the united states, how did energy consumption compare to population growth

The frequency of a tuning fork can be found by the method shown. a long tube open at both ends is submerged in a beaker of water, and the vibrating tuning fork is placed near the top of the tube. the length l of the air column is adjusted by moving the tube vertically. the sound waves generated by the fork are reinforced when the length of the air column corresponds to one of the resonant frequencies of the tube. the smallest value for l for which a peak occurs in sound intensity is 7 cm. l what is the frequency of the tuning fork? the speed of sound in air is 345 m/s. answer in units of hz