Explain how two different types of friction are present during lunch in the school cafeteria.

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction. true or false?

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.

If the area of a square has increased by a factor of 16, by how much has each side increased?