Which of the following is most likely a heterogeneous mixture? a. a jar of mixed nuts ( ͡° ͜ʖ ͡°) b. sugar water c. stainless steel d. water in a swimming pool

What is the freezing point of radiator fluid that is 50% antifreeze by mass? kf for water is 1.86 ∘c/m.

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.

What do we mean by the event horizon of a black hole?