Sally and sue took a canoe trip down the mississippi river. their average speed for the trip south was 20 miles/hour. 20 miles/hour south is the girls'
a) acceleration.
b) distance.
c) speed.
d) velocity.

What produces wave a)sound b) heats c)transfer of energy d)vibrations

Which is a characteristic of the electron sea model for metallic bonding? molecular orbitals overlap to produce bands. electrons flow easily between metal nuclei. electrons are in fixed positions in the orbitals. atomic nuclei are arranged in an irregular pattern.

Imagine a small synthetic vesicle made from pure phospholipids enclosing an interior lumen containing 1 mm glucose and 1 mm sodium chloride. if the vesicle is placed in pure water, which of the following happens faster? a. na+ diffuses out. b. cl– diffuses out. c. h2o diffuses in. d. glucose diffuses out. e. sodium chloride diffuses out.