calculate the distance at which an object should be placed in front convex lens of focal length 10 cm to obtain an image double its size​

Ineed asap! list 3 examples in which friction us or makes things easier in our daily life. explain the effect of friction for each. *make sure you explain the effect of friction for each example! *

Which of the following types of electromagnetic radiation has the longest wavelength? a. infrared light b. visible light c. ultraviolet light d. microwaves

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s.what is the wavelength?