A hydrogen bond is a special form of a(n) a. covalent bond.
b. dipole-dipole force.
C. ionic bond.
d. London dispersion force.

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)

A20 cm long spring is attached to a wall. the spring stretches to a length of 22 cm when you pull on it with a force of 100 n. what is the spring constant

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.